Mineral felt GOST 6418 81 quality documents. Technical coarse-wool felt and parts made from it for mechanical engineering. Packaging, labeling, transportation and storage

Minimum order quantity -1 roll (per roll from 30 to 35 kg).
You can get advice by calling the sales department: +7 (83159) 689-13 And +7 (83159) 689-42 from Monday to Thursday from 8:00 to 17:00 and on Friday from 8:00 to 16:00 Moscow time. Lunch break from 12:00 to 12:40.
Please send written applications by email: [email protected] .

Delivery conditions

No later than 20 days after receiving a written application and advance payment in the amount of 100% of the cost of the goods.
For systematic deliveries no later than 20 days after receipt of a written application.

Calculations

Transfer of advance payment of 100% of the cost of the goods to the supplier’s bank account.
For systematic deliveries, transfer 100% of the cost of the goods to the supplier’s bank account after transfer of the goods to the buyer.
Letter of Credit.
Cash.

Delivery

By car.
By rail.
Receipt from the supplier (product selection).
Russian Post.

Shipment

On the terms of self-pickup from the warehouses of finished products of the Bor Felt Factory.
Baggage from Gorky-Moskovsky station to the destination station.
Through a transport company of the buyer's choice (Attenta, Autotrading, PEC, Zheldorekspeditsiya, Business Lines, Ratek, RAIL Continent, etc.).
By Supplier's road transport to Moscow.
5-ton container with st. Mokhovye Gory State Railway to the destination station. The norm for loading felt into a 5-ton container is 1500 kg.
20-ton container with st. Kostariha State Railway to the destination station. The norm for loading felt into a 20-ton container is 5000 kg.

^5#"" Official publication

USSR STATE COMMITTEE ON STANDARDS Moscow

UDC "77.076.34: 006.354 Group Ml 5

STATE STANDARD OF THE USSR UNION

TECHNICAL COARSE WOOL FELT AND PARTS FROM IT FOR MECHANICAL ENGINEERING Technical conditions

Technical coarse woo! felt and machinery parts from it

GOST 6418-67

This standard applies to technically coarse felt and parts made from it for mechanical engineering (seals, gaskets, filters), as well as to felt used as an insulating material.

Expiration date extended

1. MAIN PARAMETERS AND DIMENSIONS

1.1. Depending on the purpose, technical coarse wool felt is divided into types:

GS - felt for oil seals used to retain lubricating oils in friction areas and protect friction areas from water and dust;

GPR - felt for gaskets that protect machine parts from abrasion, contamination, shock, shock, and also used for sound absorption.

Felt for gaskets is made in two grades depending on the degree of compaction:

A - with a density of (0.32±0.02) g/cm 3 ;

B - with a density of (0.26±0.02) g/cm 1 (for soft pads); GF - felt for filters used for filtering oils:

Reissue (October 1986) with Change M I. approved in August 1985 (NUS II -85).

GI - felt for insulation, used as a heat and sound insulating material.

1.2. The dimensions of the felt cavity are established in agreement with the consumer:

length - from 1.0 to 5.0 m;

width - from 0.7 to 2.0 m;

thickness - from 8.0 to 20.0 mm.

1.3. Nominal dimensions and maximum deviations in thickness of all types of felt, manufactured in nominal quantities with an interval of 1 mm. must correspond to those indicated in the table. 1.

Note. The nominal thickness of the foam for insulation is from 6.0 mm.

1.4. The symbol of felt includes the designation of the type of felt and brand, the thickness size and the designation of the present standard.

Examples of symbols Coarse wool felt, 10 mm thick: for oil seals - felt GS 10 GOST 6418-81 for gaskets grade A - felt GPRAYU GOST 6418-81 for gaskets grade B - felt GIRYO GOST 6418-81 for filters - felt GF10 GOST 6118- 81 for insulation - felt GIYU GOST 6418-81

Continued tqOj. 2

About the type of part

II elastic seal, coarse wool. Plate-gasket, grade A, coarse wool.

P. plate S G

PrAG plate

Plate PrBG Plate FG Disk SG Disk PrAG Disk FG Seal FgG

Gasket AFgG

Gasket BFgG Filter FgG

Plate-laying grade B, coarse-wool

Plastn na - filter gro boshers tia I Disc-oil seal, coarse-wool Disc-gasket, grade A, coarse-wool Disc-filter, coarse-wool Oil seal, figured, coarse-haired Gasket, markn A, figured, coarse-wool

Gasket brand B figured coarse-wool-NEP

Filter figured coarse wool

Note. A rectangular felt piece up to JOO mm wide inclusive is called tape, and over JOO mm wide is called plastic.

1.6. Felt parts in shape and size must comply with the technical documentation of the consumer, agreed with the manufacturer.

1.7. Maximum deviations from the nominal dimensions of felt rings and disks must correspond to those indicated in the table. 3, and felt tapes, plates and figured parts - in table. 4.

Table 3

	Prev.<плл
	by outer diameter for		■about the internal budget for
		prokl*-dchk k «r-ki A		up to* grade A
St. 10 to 25" k.t.



> 100 * 200 >

> 2M » 300 »

1.8. The nominal dimensions and maximum deviations in thickness of felt parts manufactured at nominal intervals of 1.0 mm must correspond to those indicated in table. 5.

Table 4

	Damn. oto.
		according to shären dl"
gaskets			sigh

Note. Maximum deviations for* strips and plates with a length and width of over 400 mm are set to ±1.0 km for every 100 mm additionally in excess of 400 mm of length and width.

Table 5

1.9. The symbol for felt parts includes the designation of types of parts and their sizes in millimeters in the following order:

along the rings - outer and inner diameters, thickness; for tapes and plates - length, width, thickness; on disks - diameter, thickness;

for figured parts - after the symbol it is indicated “according to the drawing >6_>;

Examples of symbols Coarse-wool seal ring, outer diameter 75 mm. internal - 50 mm, thickness 7 mm:

GOST 6418-! Page 5

Gasket tape, grade B, coarse, 80 mm long, 40 mm wide, 15 mm thick:

2. TECHNICAL REQUIREMENTS

2.1. Technical coarse wool felt and parts made from it for mechanical engineering must be manufactured in accordance with the requirements of this standard according to technological modes approved in the prescribed manner.

2.2. Technical coarse wool felt and parts made from it for mechanical engineering must correspond in composition of fibers in the mixture to that indicated in the table. 6.

Table 6

Note. The content of non-wool fibers in the mixture is allowed due to the presence of them and recovered wool, both in production and in combed coarse tow.

The total mass fraction of non-wool fibers in the finished felt should not be more than indicated in the table. 7.

2.3. Replacement allowed:

sheep factory wool, fur wool of lengths I, 11 and III, tow and acid wool from fur sheepskins;

up to 8% factory wool and up to 2% natural coarse sheep wool using a crossbred klunker in a hot wash;

up to 4% natural coarse sheep wool and natural goat wool.

(Changed edition, Rev. .Ns 1).

Table 7

		Norm for suubu felt* doi
Name ls «a.1atsdv		gaskets
Name ls «a.1atsdv
Standardized humidity, %
Density, g/cm*
Tensile strength (with a felt thickness of 5 mm), Pa (kgf/cm 1), not less
Elongation of the gap. %. no more"
Mass dolm of free sulfuric acid. Hi. no more
Mass fraction of plant impurities. Not
Mass fraction of non-wool fibers. %. no more
Mass fraction of mineral impurities (together with ash and plant impurities), no more
Capillarity (with a thickness of 10 mm or less), mm. no mess during:

Notes:

1. The actual humidity of the felt and its parts should not be standardized.

2. Standards for density, mass fraction of free sulfuric acid, plant and mineral impurities and wool fibers apply to felt with a normalized moisture content of 13%

2.4. The color of the felt should be natural. Allowed in different shades, when using dyed combed, rough-haired tows and regenerated wool.

2.5. In terms of physical, mechanical and chemical parameters, technical coarse wool felt and parts made from it for mechanical engineering must comply with the standards specified in Table. 7.

2.6. The density of seals and gaskets of grade L, depending on their thickness and outer diameter or length, must correspond to that indicated in the table. 8.

Notes:

1. Minus permissible deviations must not exceed 0.02 g/cm*.

2. The maximum density should not exceed that established in table. 7 for felts of this type.

3. Density standards are established for tracks with a width of at least 7 mm. For rings with a width of less than 7 mm, they are installed in agreement with the consumer.

2.7. In terms of mechanical strength, felt for insulation must meet the following requirement: when suspended by one edge without distortion, there should be a cavity of felt 4 m long. rupture of the cavity from the action of its own mass.

At the request of the consumer, it is allowed to produce solid-cut rings with an outer diameter of over 60 mm.

2.9. Felt rings sewn from tape must meet the following requirements:

with an outer diameter of the ring up to 400 mm inclusive, one seam is allowed, over 400 mm - two seams;

stitching is carried out in at least two rows with linen threads 105 texX5, 130 texX*. 105 texХО, 130 texХ5 but GOST 2350-73 or especially strong cotton threads 27 texХЗХЗ, 27 texХЗХЗ 18.5 texХЗХЗ, 16.5 texХЗХ2 according to GOST 6309-80.

the joint line at the stitching site should be inclined, and the cut angle (a) should be 20-30° (see drawing);

The thickness of the threads is selected depending on the width and thickness of the ring.

If the ring width is 10 mm or more, the stitch closest to the inner edge of the ring should be at least 3 mm away from it. If the ring width is less than 10 mm, it is allowed to sew the rings in one row with the stitching positioned at an equal distance from the edges of the ring;

when sewing rings from ribbons up to 10 mm thick, the stitch pitch should be no more than 6 mm, when the ribbon thickness is more than 10 mm - no more than 10 mm;

the cut planes of the joint must fit tightly to one another and must not be displaced;

at the junction, the thickness of the ring should not exceed the standards and maximum deviations indicated in the table. 5;

at the junction, the elasticity of the ring should not differ noticeably from the elasticity of the ring in other areas;

the bulk of the fibers in the stitched ring should be directed along the circumference of the ring.

2.10. Felt and parts made from it should not delaminate.

2.11. Gluing felt and parts made from it is not allowed.

2.12. The surface of the parts must be clean, with lint evenly removed, without scars. Lint may be present in gasket parts.

2.13. Parts must not have tears, torn areas, bevels or other mechanical damage.

2.14. The edges of the felt cavity should not deviate from straightness over 1 m of length by more than ±20 mm.

d. ACCEPTANCE RULES AND TEST METHODS

3.1. Acceptance rules and test methods - according to GOST 314-72.

GOST “418-41 Page. 9

4. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

4.1. The felt cavities are tightly rolled into a roll weighing no more than 70 kg and tied in two places with rope in accordance with GOST 1868-72.

At the request of the consumer and when transported by rail, tied rolls of felt must be packed in investment fabric made from chemical threads or investment non-woven fabric in accordance with GOST 14253-83 and other regulatory and technical documentation.

(Changed edition, Amendment No. 1).

4.2. At the end of each felt cavity there must be a stamp indicating the symbol of the felt.

4.3. Felt parts are packaged in boxes in accordance with GOST 10350-81, bales or bags made of packaging fabric in accordance with GOST 5530-81 or in packaging fabric with chemical threads according to normative and technical documentation. Bales or bags are sewn up manually with twine in accordance with GOST 17308-85. The stitch length should be no more than (40±10) mm.

The weight of each box, bale or bag with felt parts should not exceed 50 kg.

When packing felt parts of different sizes into one box, bale or bag, parts of the same size must be tied with twine into bundles. Each package must have a label attached to it indicating the details in accordance with clause 4.4.

4.4. Transport markings must be applied to cardboard or plywood labels according to GOST 14192-77 indicating additional data characterizing the products:

name of the manufacturer and its trademark;

names of felt or felt parts;

felt thickness or sizes of felt parts;

weight of felt at normalized and actual humidity or number of felt parts;

quality control stamp;

dates of manufacture;

batch numbers;

symbols of this standard;

manipulation sign - “Afraid of dampness.”

Before the manipulation sign “Afraid of dampness” a danger sign is applied for class 9, subclass 9.2 in accordance with GOST 19433-81.

4.5. When transporting felt to the Far North and hard-to-reach areas, the tied rolls must be sheathed with two layers of investment fabric made from chemical threads or

Page 10 GOST W18-81

investment nonwoven fabric in accordance with GOST 14253-83 and tied with rope in accordance with GOST 10350-81.

4.3-4.5. (Changed edition, Rev. J6 1).

4.6. Each batch of felt and felt parts must be accompanied by a document certifying the product’s compliance with the requirements of this standard and containing:

name of the manufacturer and its trademark;

name of felt or felt parts;

laboratory test results indicating the batch number and date;

stamp OT K;

designation of this standard.

4.7. Felt and felt parts are transported by all modes of transport, except air, in covered vehicles according to the rules in force for the corresponding mode of transport.

These products are transported by rail in small shipments.

When transporting felt and felt parts in transport packages, they must be formed in accordance with GOST 21929-76.

The gross weight of the package should not exceed 500 kg.

4.8. Felt should be stored in a closed, ventilated area.

For air access, the base of the stack must be at least 0.2 m above the floor level of the room, and the height of the stack should not exceed 2 m.

Felt parts should be stored in boxes or on racks to protect them from deformation.

4.7, 4.8 (Changed edition, Amendment No. 2).

4.9. During storage, felt and felt parts must be treated with a protease preparation at least once every 6 months.

Editor T. P. Shashina Technical editor E. V. Mityai Proofreader L. V. Snitsarchuk

The hut has also been rented out. 10.11 $6 Sub. in psch. IS.01.S* 0.73 el. I. A. 0.75 el. pr.-“tt. 0.71 academic nza D. Circulation 10 0" Tsoi 5 kopecks.

Op^cui “Sign 11och*t”” Publishing house.poyo syidar-goa. 12M4U. Moscow, GSP. Noaoprssmyaskiy lc>„ d. i Vilnius taiograph * Standard Publishing House”, st. Minaugo, 12/14. For room *387.

BACK AND LEATHER MATERIALS AND PRODUCTS,

CHEMICAL FIBERS

Group" M1S

Change No. 2 GOST 6418-81 Technical coarse-wool felt and parts for mechanical engineering. Technical conventions

Approved and put into effect by the Decree of the State Standard of Russia dated March 24, 1992.4 240

Date of introduction 01.09.92

Clause 22. Table 6. Column “Type of fiber”. The sixth paragraph should be supplemented with the words: “in purified form”,

note. Replace the words: “Content of non-wool fibers in the mixture” with the percentage of non-wool fibers in the mixture.”

Paragraph 23 shall be stated as amended:<2.3. Допускается при отсутствии сырья, указанного в 7абл. 6:

replacing natural wool with cotton wool clips no more than 3% by weight of natural wool.

replacement of factory sheep wool with fur sheepskin wool, semi-coarse and coarse I, 2 lengths or combed coarse tow:

replacement of factory cow sherega with sheep factory wool or semi-coarse and coarse sheepskin wool of 1, 2, 3 lengths (3rd length no more than 30% of the mass of fur wool) and acid wool from fur and fur sheepskins (no more than 5 Chz by mass of the mixture );

(Continued on page 150)

(Continuation of changes to GO (TG 6418-61)

replacement of sheep and cow factory wool with natural sheep wool. OR natural goat hair no more than 5% or weight of the mixture;

replacement of up to 8% of factory wool); up to 2% sheep moisture rov-

L#-awprnr "tsdvykeuiya" llnlzpyug goyachstG MWttTC---

replacement of recovered reverse wool"" of its own production" in purified form or acid wool.

Clause 4.1. Zamszhgg ssy.tku: GOST I86S-72 to GOST 1666-88.

Clause 4.4. Tenth paragraph. Replace the words: “Afraid of dampness” aa “Keep away from moisture”;

delete the eleventh paragraph

Clause 4.7 shall be stated in the new wording: “4.7. Felt and felt parts* are transported by all grandfathers in covered transport vehicles according to the rules in force on the transport of the corresponding type.

These products are transported by rail in small shipments.

When transporting felt and felt parts in transport* packages, they must be formed in accordance with GOST 26663-86. Package sizes are in accordance with GOST 24597-81. For packaging, flat pallets are used in accordance with GOST 9078-84. Bonding of stalemate - according to GOST 21650-76. The means of fastening the packages is steel packing wire in accordance with GOST 3560-73. GOST 503-81. GOST 6009-74

The gross weight of the package should be no more than 50 kg.”

6. The limitation on the validity period has been lifted by Decree of the State Standard of March 24, 1992 N 240

7. REISSUE (August 1996) with Amendments No. 1, 2, approved in November 1985, March 1992 (IUS 11-85, 6-92)

This standard applies to technical coarse felt and parts made from it for mechanical engineering (seals, gaskets, filters), as well as to felt used as an insulating material.

1. MAIN PARAMETERS AND DIMENSIONS

1.1. Depending on the purpose, technical coarse wool felt is divided into types:

GS - felt for oil seals used to retain lubricating oils in friction areas and protect friction areas from water and dust;

GPR - felt for gaskets that protect machine parts from abrasion, contamination, shock, shock, and also used for sound absorption.

Felt for gaskets is made in two grades depending on the degree of compaction:

A - with a density of (0.32±0.02) g/cm;

B - with a density of (0.26±0.02) g/cm (for soft pads);

GF - felt for filters used for filtering oils;

GI - felt for insulation, used as a heat and sound insulating material.

1.2. The dimensions of the felt cavity are established in agreement with the consumer:

length - from 1.0 to 5.0 m;

width - from 0.7 to 2.0 m;

thickness - from 8.0 to 20.0 mm.

1.3. The nominal dimensions and maximum deviations in thickness of all types of felt, manufactured in nominal quantities with an interval of 1 mm, must correspond to those indicated in Table 1.

Table 1



	Prev. off
From 8.0 to 10.0
St. 10.0 " 15.0
" 15,0 " 20,0

Note. The nominal thickness of felt for insulation is from 6.0 mm.

1.4. The symbol of felt includes the designation of the type of felt and brand, thickness size and

Examples of symbols

Coarse wool felt, 10 mm thick:

for oil seals - felt GS10 GOST 6418-81

for gaskets grade A - felt GPrA10 GOST 6418-81

for gaskets grade B - felt GPrB10 GOST 6418-81

for filters - felt GF10 GOST 6418-81

for insulation - felt GI10 GOST 6418-81

1.5. Parts for mechanical engineering from coarse felt, depending on the purpose and shape, are manufactured in the following types, indicated in Table 2.

table 2


Part type	Part type designation
Coarse-haired seal ring	Ring SG
Ring-spacer brand A, coarse wool	Ring PrAG
Coarse-haired filter ring	FG ring
Coarse wool seal tape	Tape SG
Tape-laying grade A, coarse wool	PrAG Tape
Tape-laying grade B, coarse wool	PrBG tape
Coarse wool filter tape	FG tape
Coarse-haired seal plate	SG plate
Plate-laying grade A, coarse-wool	PrAG plate
Plate-laying grade B, coarse-wool	PrBG plate
Coarse-wool filter plate	FG plate
Coarse-haired oil seal disc	SG disk
Spacer disc, grade A, coarse-haired	PrAG disk
Coarse-wool filter disc	FG disk
Shaped coarse-haired oil seal	Oil seal FgG
Gasket brand A figured coarse wool	Gasket AFgG
Gasket brand B figured coarse wool	Gasket BFgG
Filter figured coarse wool	FgG filter

Note. A rectangular felt part with a width of up to 100 mm inclusive is called a tape, and over 100 mm is called a plate.

1.6. Felt parts in shape and size must comply with the technical documentation of the consumer, agreed with the manufacturer.

1.7. Maximum deviations from the nominal dimensions of felt rings and disks must correspond to those indicated in Table 3, and for felt tapes, plates and figured parts - in Table 4.

Table 3



	Prev. off
	by outer diameter for			by internal diameter for
	oil seals	gaskets grade A	filters	oil seals	gaskets grade A	filters
From 10 to 25 incl.

" 25 " 100 "

" 100 " 200 "

" 200 " 300 "

Table 4



	Prev. off
	in length for				in width for
	oil seals	gaskets		filters	oil seals	gaskets		filters
		grade A	brand B			grade A	brand B
St. 10 to 25 incl.
" 25 " 100 "
" 100 " 200 "			4,0 -3,0	4,0 -3,0
" 200 " 300 "	3,0 -2,0		5,0 -3,0	5,0 -3,0	3,0 -2,0		5,0 -3,0	5,0 -3,0
" 300 " 400 "

Note. Maximum deviations for tapes and plates with a length and width of over 400 mm are set to ±1.0 mm for every 100 mm additionally in excess of 400 mm of length and width.

1.8. The nominal dimensions and maximum deviations in thickness of felt parts manufactured at nominal intervals of 1.0 mm must correspond to those indicated in Table 5.

Table 5



	Prev. off
	for oil seals	for gaskets		for filters
		grade A	brand B
From 3.0 to 5.0
St. 5.0 " 10.0
" 10,0 " 20,0

1.9. The symbol for felt parts includes the designation of types of parts and their dimensions in millimeters in the following order:

along the rings - outer and inner diameters, thickness;

for tapes and plates - length, width, thickness;

on disks - diameter, thickness;

for figured parts - after the symbol it is indicated “according to drawing N ____”;

designation of this standard.

Examples of symbols

Coarse-haired seal ring, outer diameter 75 mm, inner diameter 50 mm, thickness 7 mm:

Ring SG 75-50-7 GOST 6418-81

Gasket tape, grade A, coarse, 80 mm long, 40 mm wide, 15 mm thick:

Tape PrAG 80-40-15 GOST 6418-81

Gasket tape, grade B, coarse, 80 mm long, 40 mm wide, 15 mm thick:

Tape PrBG 80-40-15 GOST 6418-81

Coarse-wool filter plate, 300 mm long, 200 mm wide, 5 mm thick:

Plate FG 300-200-5 GOST 6418-81

Disc-spacer grade A; coarse-haired, diameter 120 mm, thickness 10 mm:

Disk PrAG 120-10 GOST 6418-81

Figured coarse-haired oil seal:

Oil seal FgG according to drawing N ___ GOST 6418-81

2. TECHNICAL REQUIREMENTS

2.2. Technical coarse wool felt and parts made from it for mechanical engineering must correspond in composition of fibers in the mixture to that indicated in Table 6.

Table 6


Fiber type	Mass fraction of fibers in the mixture, %, for
	seals, gaskets and filters	isolation
Natural sheep wool, equivalent to washed wool
Factory sheep wool
Factory cow wool
Other factory wool
Regenerated wool
Refined products from your own production
Chemical fibers

Note. The mass fraction of non-wool fibers in the mixture is allowed due to their presence in recovered wool, production waste and in combed coarse tow.

The total mass fraction of non-wool fibers in the finished felt should not be more than indicated in Table 7.

Table 7


Indicator name	Standard for types of felt for
	oil seals	gaskets		filters	isolation
		grade A	brand B
Standardized humidity, %
Density, g/cm
Tensile strength (with a felt thickness of 5 mm), Pa (kgf/cm), not less		117.6x10(12)
Elongation at break, %, no more
Mass fraction of free sulfuric acid, %, no more
Mass fraction of plant impurities, %, no more
Mass fraction of non-wool fibers, %, no more
Mass fraction of mineral impurities (together with ash from plant impurities), %, no more
Capillarity (with a thickness of 10 mm or less), mm, not less for:

Notes:

1. The actual moisture content of felt and parts made from it should not exceed the normalized value.

2. Standards for density, mass fraction of free sulfuric acid, vegetable and mineral impurities and non-wool fibers apply to felt with a normalized moisture content of 13%.

2.3. Allowed in the absence of raw materials specified in Table 6:

replacing natural wool with cotton wool, no more than 3% by weight of natural wool;

replacing factory sheep wool with semi-coarse and coarse sheepskin fur of 1, 2 lengths or combed coarse tow;

replacement of factory cow wool with factory wool or semi-coarse and coarse sheepskin wool of 1, 2, 3 lengths (3rd length no more than 30% of the mass of fur wool) and acid wool from fur and fur sheepskins (no more than 5% of the mass of the mixture) ;

replacement of sheep and cow factory wool with natural sheep wool or natural goat wool no more than 5% by weight of the mixture;

replacement of up to 8% of factory wool and up to 2% of natural coarse sheep wool with a crossbred klunker from a hot wash;

replacement of recovered wool with waste products from their own production in purified form or acid wool.

2.2, 2.3.

2.4. The color of the felt should be natural. Different shades are allowed when using dyed combed coarse wool tosses and reconstituted wool.

2.5. In terms of physical, mechanical and chemical parameters, technical coarse wool felt and parts made from it for mechanical engineering must comply with the standards specified in Table 7.

2.6. The density of seals and gaskets of grade A, depending on their thickness and outer diameter or length, must correspond to that indicated in Table 8.

Table 8


the name of detail	Thickness, mm	Density, g/cm, with outer diameter or length of the part, mm
		St. 10 to 25	St. 25 to 50	St. 50 to 100
Oil seals	From 3.0 to 5.0
	St. 5.0 " 10.0
	" 10,0 " 20,0
Gaskets grade A	From 3.0 to 5.0
	St. 5.0 " 10.0
	" 10,0 " 20,0

Notes:

1. Minus permissible deviations should not exceed 0.02 g/cm.

2. The maximum density should not exceed that established in Table 7 for felt of this type.

3. Density standards are established for rings with a width of at least 7 mm. For rings with a width of less than 7 mm, they are installed in agreement with the consumer.

2.7. In terms of mechanical strength, felt for insulation must meet the following requirement: when suspended by one edge without skewing a felt cavity 4 m long, there should be no rupture of the cavity due to the action of its own weight.

2.8. Felt rings with an outer diameter of up to 60 mm inclusive are made entirely cut, over 60 mm - sewn from tape, except for those rings that cannot be sewn due to the large difference between the width and thickness of the ring. Such rings are made from solid cuts.

At the request of the consumer, it is allowed to produce solid-cut rings with an outer diameter of over 60 mm.

2.9. Felt rings sewn from tape must meet the following requirements:

with an outer diameter of the ring up to 400 mm inclusive, one seam is allowed, over 400 mm - two seams;

the joint line at the stitching site should be inclined, and the cut angle () should be 20-30° (see drawing);

stitching is carried out in at least two rows with linen threads 105 tex x5, 130 tex x4, 105 tex x6, 130 tex x5 according to GOST 14961 or especially strong cotton threads 27 tex x3x3, 27 tex x3x4, 18.5 tex x3x3, 16.5 tex x3x2 according to GOST 6309.

The thickness of the threads is selected depending on the width and thickness of the ring.

If the ring width is 10 mm or more, the stitch closest to the inner edge of the ring should be at least 3 mm away from it. If the ring width is less than 10 mm, it is allowed to sew the rings in one row with the stitching positioned at an equal distance from the edges of the ring;

when sewing rings from ribbons up to 10 mm thick, the stitch pitch should be no more than 6 mm, when the ribbon thickness is more than 10 mm - no more than 10 mm;

the cut planes of the joint must fit tightly to one another and must not be displaced;

at the junction, the thickness of the ring should not exceed the standards and maximum deviations specified in Table 5;

at the junction, the elasticity of the ring should not differ noticeably from the elasticity of the ring in other areas;

the bulk of the fibers in the stitched ring should be directed along the circumference of the ring.

(Changed edition, Amendment No. 2).

2.10. Felt and parts made from it should not delaminate.

2.11. Gluing felt and parts made from it is not allowed.

2.12. The surface of the parts must be clean, with lint evenly removed, without scars. Lint may be present in gasket parts.

2.13. Parts must not have tears, torn areas, bevels or other mechanical damage.

2.14. The edges of the felt cavity should not deviate from straightness over 1 m of length by more than ±20 mm.

3. ACCEPTANCE RULES AND TEST METHODS

3.1. Acceptance rules and test methods - according to GOST 314.

4. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

4.1. The felt cavities are tightly rolled into a roll weighing no more than 70 kg and tied in two places with rope in accordance with GOST 1868.

At the request of the consumer and when transported by rail, tied rolls of felt must be packed in investment fabric made from chemical threads or investment non-woven fabric in accordance with GOST 14253 and other regulatory and technical documentation.

4.2. At the end of each felt cavity there must be a stamp indicating the symbol of the felt.

4.3. Felt parts are packaged in boxes in accordance with GOST 10350, bales or bags made of packaging fabric in accordance with GOST 5530* or in packaging fabric made of chemical threads in accordance with normative and technical documentation. Bales or bags are sewn up manually with twine in accordance with GOST 17308. The stitch length should be no more than (40±10) mm.
____________________
* GOST 5530-2004 is in force on the territory of the Russian Federation. - Note "CODE".

The weight of each box, bale or bag with felt parts should not exceed 50 kg.

When packing felt parts of different sizes into one box, bale or bag, parts of the same size must be tied with twine into bundles. Each package must have a label attached to it indicating the details in accordance with clause 4.4.

4.4. Transport markings must be applied to cardboard or plywood labels in accordance with GOST 14192 indicating additional data characterizing the products:

name of the manufacturer and its trademark;

felt thickness or sizes of felt parts;

weight of felt at normalized and actual humidity or number of felt parts;

quality control stamp;

dates of manufacture;

batch numbers;

symbols of this standard;

manipulation sign - “Keep away from moisture.”

(Changed edition, Amendment No. 2).

4.5. When transporting felt to the Far North and hard-to-reach areas, tied rolls must be sheathed with two layers of investment fabric made of chemical threads or investment non-woven fabric in accordance with GOST 14253 and tied with rope in accordance with GOST 10350.

4.3-4.5. (Changed edition, Amendment No. 1).

4.6. Each batch of felt and felt parts must be accompanied by a document certifying the product’s compliance with the requirements of this standard and containing:

name of the manufacturer and its trademark;

name of felt or felt parts;

laboratory test results indicating the batch number and date;

quality control stamp;

designation of this standard.

4.7. Felt and felt parts are transported by all types of transport in covered vehicles according to the rules in force for the corresponding type of transport.

The specified products are transported by rail in small shipments. The gross weight of the package should be no more than 500 kg.

(Changed edition, Amendment No. 2).

4.8. Felt should be stored in a closed, ventilated area.

For air access, the base of the stack must be at least 0.2 m above the floor level of the room, and the height of the stack should not exceed 2 m.

Felt parts should be stored in boxes or on racks to protect them from deformation.

(Changed edition, Amendment No. 1).

4.9. During storage, felt and felt parts must be treated with an anti-moth preparation at least once every 6 months.

The text of the document is verified according to:
official publication
M.: IPK Standards Publishing House, 1996

STATE STANDARD

USSR UNION

TECHNICAL COARSE WOOL FELT AND PARTS FROM IT FOR MECHANICAL ENGINEERING

TECHNICAL CONDITIONS

GOST 6418-81

Official publication

USSR STATE COMMITTEE ON STANDARDS

UDC 677.076.24: 006.354 Group Ml 5

STATE STANDARD OF THE USSR UNION

TECHNICAL COARSE WOOL FELT AND PARTS FROM IT FOR MECHANICAL ENGINEERING Technical conditions

Technical coarse wool felt and machinery parts from it.

OKP 81 6131 81 6330

GOST 6418-67

By Decree of the USSR State Committee on Standards dated May 21, 1981 No. 2546, the introduction date was established

Verified in 1985 by State Standard Decree No. 2708 dated 08.21.85

validity period extended until 01/01/92

Failure to comply with the standard is punishable by law

This standard applies to technical coarse felt and parts made from it for mechanical engineering (seals, gaskets, filters), as well as to felt used as an insulating material.

1. MAIN PARAMETERS AND DIMENSIONS

1.1. Depending on the purpose, technical coarse wool felt is divided into types:

GS - felt for oil seals used to retain lubricating oils in friction areas and protect friction areas from water and dust;

GPR - felt for gaskets that protect machine parts from abrasion, contamination, shock, shock, and also used for sound absorption.

Felt for gaskets is made in two grades depending on the degree of compaction:

A - with a density of (0.32±0.02) g/cm 3 ;

B - with a density of (0.26±0.02) g/cm 3 (for soft pads);

GF - felt for filters used for filtering oils;

Official publication Reproduction prohibited

* Reissue (October 1986) with Change No. /, approved in August 1985 (IUS I-85).

GI - felt for insulation, used as a heat and sound insulating material.

1.2. The dimensions of the felt cavity are established in agreement with the consumer:

length - from 1.0 to 5.0 m;

width - from 0.7 to 2.0 m;

thickness - from 8.0 to 20.0 mm.

1.3. The nominal dimensions and maximum deviations in thickness* of not all types of felt, manufactured at nominal intervals of 1 mm, must correspond to those indicated in the table. 1.

Note. The nominal thickness of felt for insulation is from 6.0 mm.

1.4. The symbol of felt includes the designation of the type of felt and brand, the thickness size and the designation of the present standard.

Examples of symbols Coarse wool felt, 10 mm thick: for oil seals - felt GS10 GOST 6418-81 for gaskets grade A - felt GLRAYU GOST 6418-81 for gaskets grade B - felt GPrBU GOST 6418-81 for filters - felt GF10 GOST 6418-81 for insulation - felt GIYU GOST 6418-81

1.5. Parts for mechanical engineering from coarse felt, depending on the purpose and shape, are made of the following types indicated in the table. 2.

table 2

Continuation of the table. 2

Part type

Part type designation

Coarse-wool seal plate Grade A coarse-wool gasket plate

Plate-laying grade B, coarse-wool

Coarse-wool filter plate Coarse-wool oil seal Disc-gasket, grade A, coarse-wool Filter disk, coarse-wool Figured, coarse-wool oil seal Grade A, figured, coarse-wool gasket

Gasket brand B figured coarse wool

Filter figured coarse wool

SG plate

PrAG plate

Plate PrBG Plate FG Disk SG Disk PrAG Disk FG Seal FgG

Gasket AFgG

Gasket BFgG Filter FgG

Note. A rectangular felt part with a width of up to 100 mm inclusive is called a tape, and over 100 mm is called a plate.

1.6. Felt parts in shape and size must comply with the technical documentation of the consumer, agreed with the manufacturer.

1.7. Maximum deviations from the nominal dimensions of felt rings and disks must correspond to those indicated in the table. 3, and felt tapes, plates and figured parts - in table. 4.

Table 3

1.8. The nominal dimensions and maximum deviations in thickness of felt parts manufactured at nominal intervals of 1.0 mm must correspond to those indicated in table. 5.

	Prev. off
			in width for
		gaskets		gaskets

Sat, 10 to 25 incl.

» 100 » 200 »

» 200 » 300 »

> 300 » 40*0 »

Note. Maximum deviations for tapes and plates with a length and width of over 400 mm are set to ±1.0 mm for every 100 mm additionally in excess of 400 mm of length and width.

Table 5

1.9. The symbol for felt parts includes the designation of types of parts and their dimensions in millimeters in the following order:

along rings 1 - outer and inner diameters, thickness; for tapes and plates - length, width, thickness; on disks - diameter, thickness;

for figured parts - after the symbol it is indicated “according to drawing No._”;

Examples of symbols Coarse-haired seal ring, outer diameter 75 mm, inner diameter 50 mm, thickness 7 mm:

Ring SG 75-50-7 GOST 6418-81 Gasket tape, grade A, coarse wool, 80 mm long, 40 mm wide, 15 mm thick:

Tape PrAG 80-40-15 GOST 6418-81

Gasket tape, grade B, coarse, 80 mm long, 40 mm wide, 15 mm thick:

Tape PrBG 80-40-15 GOST 6418-81 Coarse-wool filter plate, 300 mm long, 200 mm wide, 5 mm thick:

Plate FG 300-200-5 GOST 6418-81 Disc-spacer grade A, coarse, diameter 120 mm, thickness 10 mm:

Disc PrAG 120-10 GOST 6418-81 Shaped coarse-haired oil seal:

Oil seal FgG according to drawing No. GOST 6418-81

2. TECHNICAL REQUIREMENTS

2.2. Technical coarse wool felt and parts made from it for mechanical engineering must correspond in composition of fibers in the mixture to that indicated in the table. 6.

Table b

Note The content of non-wool fibers in the mixture is allowed due to their presence in recovered wool, waste products and combed coarse tow

The total mass fraction of non-wool fibers in the finished felt should not be more than indicated in the table. 7.

2.3. Replacement allowed:

sheep factory wool with fur wool of lengths I, II and III, tow and acid wool from fur sheepskins;

up to 8% factory wool and up to 2% natural coarse sheep wool using a crossbred klunker in a hot wash;

up to 4% natural coarse sheep wool and natural goat wool.

Table 7

			by type of felt for
Name indicator		gaskets		filters "
Name indicator	oil seals			filters "	isolation
Standardized humidity, °/о
Density, g/cm 3
Tensile strength (with a felt thickness of 5 mm), Pa (kgf/cm 2), not less
Elongation at break, °/о, no more
Mass fraction of free sulfuric acid, %, no more
Mass fraction of plant impurities, %, no more
Mass fraction of non-wool fibers, %, no more
Mass fraction of mineral impurities (£six with ash from plant impurities), %, no more
Capillarity (with a thickness of 10 mm or less), mm, not less for:

Notes:

L The actual moisture content of felt and parts made from it should not exceed the normalized value.

2. Standards for density, mass fraction of free sulfuric acid, vegetable and mineral impurities and non-wool fibers apply to felt with a normalized moisture content of 13%~

2.4. The color of the felt should be natural. Different shades are allowed when using dyed combed coarse wool tosses and reconstituted wool.

2.5. In terms of physical, mechanical and chemical parameters, technical coarse wool felt and parts made from it for mechanical engineering must comply with the standards specified in Table. 7.

2.6. The density of seals and gaskets of grade A, depending on their thickness and outer diameter or length, must correspond to that indicated in the table. 8.

Table 8

1. Minus permissible deviations should not exceed 0.02 g/cm 3 .

2. The maximum density should not exceed that specified in the table. 7 for felts of this type.

3. Density standards are established for rings with a width of at least 7 mm. For rings with a width of less than 7 mm, they are installed in agreement with the consumer.

2.7. In terms of mechanical strength, felt for insulation must meet the following requirement: or hanging by one edge without distortion of a felt cavity 4 m long, there should be no rupture of the cavity due to the action of its own weight.

At the request of the consumer, it is allowed to produce solid-cut rings with an outer diameter of over 60 mm.

2.9. Felt rings sewn from tape must meet the following requirements:

with an outer diameter of the ring up to 400 mm inclusive, one seam is allowed, over 400 mm - two seams;

the joint line at the stitching site should be inclined, and the cut angle (a) should be 20-30° (see drawing);

Stitching is carried out in at least two rows with linen threads 105 texXb, 130 texX4, 105 texXb, 130 texXb according to GOST 2350-73 or especially strong cotton threads 27 texHZKhZ, 27 texXZH4, 18.5 texXZHZ, 16.5 texXZX2 according to GOST 6309- 80.

The thickness of the threads is selected depending on the width and thickness of the ring.

when sewing rings from ribbons up to 10 mm thick, the stitch pitch should be no more than 6 mm, when the ribbon thickness is more than 10 mm - no more than 10 mm;

the cut planes of the joint must fit tightly to one another and must not be displaced;

at the junction, the thickness of the ring should not exceed the standards and maximum deviations indicated in the table. 5;

at the junction, the elasticity of the ring should not differ noticeably from the elasticity of the ring in other areas;

the bulk of the fibers in the cross-linked ring should be in the direction of the ring circumference.

2.10. Felt and parts made from it should not delaminate.

2L1. Gluing felt and parts made from it is not allowed.

2.12. The surface of the parts must be clean, with lint evenly removed, without scars. Lint may be present in gasket parts.

2.13. Parts must not have tears, torn areas, bevels or other mechanical damage.

2.14. The edges of the felt cavity should not deviate from straightness over 1 m of length by more than ±20 mm. 3

3. ACCEPTANCE RULES AND TEST METHODS

3.1. Acceptance rules and test methods - according to GOST 314-72.

4. PACKAGING, LABELING, TRANSPORTATION AND STORAGE

4.1. The felt cavities are tightly rolled into a roll weighing no more than 70 kg and tied in two places with rope in accordance with GOST 1868-72.

(Changed edition, Amendment No. 1).

4.2. At the end of each felt cavity there must be a stamp indicating the symbol of the felt.

4.3. Felt parts are packaged in boxes in accordance with GOST 10350-81, bales or bags made of packaging fabric in accordance with GOST 5530-81 or in packaging fabric made of chemical threads in accordance with normative and technical documentation. Bales or bags are sewn up manually with twine in accordance with GOST 17308-85. The stitch length should be no more than (40±10) mm.

The weight of each box, bale or bag with felt parts should not exceed 50 kg.

4.4. Transport markings must be applied to cardboard or plywood labels in accordance with GOST 14192-77 indicating additional data characterizing the products:

name of the manufacturer and its trademark;

names of felt or felt parts;

felt thickness or sizes of felt parts;

weight of felt at normalized and actual humidity or number of felt parts;

quality control stamp;

dates of manufacture;

batch numbers;

symbols of this standard;

manipulation sign - “Afraid of dampness.”

Before the manipulation sign “Afraid of dampness” a danger sign is applied for class 9, subclass 9.2 in accordance with GOST 19433-81.

4.5. When transporting felt to the Far North and hard-to-reach areas, the tied rolls must be sheathed with two layers of investment fabric made from chemical threads or

investment nonwoven fabric in accordance with GOST 14253-83 and tied with rope in accordance with GOST 10350-81.

4.3-4.5. (Changed edition, Amendment No. 1).

4.6. Each batch of felt and felt parts must be accompanied by a document certifying the product’s compliance with the requirements of this standard and containing:

name of the manufacturer and its trademark;

name of felt or felt parts;

laboratory test results indicating the batch number and date;

quality control stamp;

designation of this standard.

4.7. Felt and felt parts are transported by all modes of transport, except air, in covered vehicles according to the rules in force for the corresponding mode of transport.

These products are transported by rail in small shipments.

When transporting felt and felt parts in transport packages, they must be formed in accordance with GOST 21929-76.

Package sizes according to GOST 24597-81. For packaging, flat pallets are used in accordance with GOST 9078-84. Fastening of packages - according to GOST 21650-76.

The gross weight of the package should not exceed 500 kg.

4.8. Felt should be stored in a closed, ventilated area.

For air access, the base of the stack must be at least 0.2 m above the floor level of the room, and the height of the stack should not exceed 2 m.

Felt parts should be stored in boxes or on racks to protect them from deformation.

4.7, 4.8. (Changed edition, Amendment No. 2).

4.9. During storage, felt and felt parts must be treated with an anti-moth preparation at least once every 6 months.

Editor T. P. Shashina Technical editor 3. V. Mityai Proofreader L. V. Snitsarchuk

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Circulation 10,000 Price 5 kopecks

Order "Badge of Honor" Publishing house of standards, 123840, Moscow, GSP,

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Vilnius Printing House Standards Publishing House, Mindaugo str., 12/14. Zach. 5357.

M. TEXTILES AND LEATHER MATERIALS AND PRODUCTS,

CHEMICAL FIBERS

Group Ml5

Change No. 2 GOST 6418-81 Technical coarse-wool felt and parts made from it for mechanical engineering. Specifications

Approved and put into effect by Resolution of the State Standard of Russia dated March 24, 1992 No. 240

Date of introduction 01.09.92

Point 2.2. Table 6. Column “Type of fiber”. The sixth paragraph should be supplemented with the words: “in purified form”;

note. Replace the words “Content of non-wool fibers in the mixture” with “Mass fraction of non-wool fibers in the mixture.”

Clause 2.3 shall be stated in a new wording: “2.3. Allowed in the absence of raw materials specified in the table. 6

replacing natural wool with cotton wool, no more than 3% by weight of natural wool,

replacing factory sheep wool with semi-coarse and coarse sheepskin wool of 1, 2 lengths or combed coarse tow;

replacement of factory-made cow wool with factory-made sheep wool or semi-coarse and coarse sheepskin wool of 1, 2, 3 lengths (3rd length no more than 30% of the mass of fur wool) and acid wool from fur and fur sheepskins (no more than 5% of the mass of the mixture );

(Continued on page 150)

replacement of sheep and cow factory wool with natural sheep wool, or natural goat wool, not 6oiee 5% by weight of the mixture;

replacement of up to 8% of factory wool and up to 2% of sheep natural rov-

fur dyaOnkergpl" nshmdlttgg hot washing,

replacing recovered wool with waste products from our own production in purified form or with acid wool"

Clause 4.4. Tenth paragraph. Replace words. “Afraid of dampness” to “Keep away from moisture”;

delete the eleventh paragraph

Clause 4.7 shall be stated in a new edition “4 7. Felt and felt parts are transported by all types of transport in covered vehicles according to the rules in force for the corresponding type of transport.

These products are transported by rail in small shipments

When transporting felt and felt parts in transport packages, they must be formed in accordance with GOST 26663-86. The dimensions of the packages are in accordance with GOST 24597-81. For packaging, flat pallets are used in accordance with GOST 9078-84. Fastening of packages - in accordance with GOST 21650-76 The means of fastening packages is steel packaging wire in accordance with GOST 3560-73, GOST 503-81, GOST 6009-74

The gross weight of the package should be no more than 500 kg.”

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