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Technical Information

Back to the Category Discs/Sleeves (Rubber, Caoutchouc, Foam, Felt)

Technical Drawing - Polyurethane Rubber Washers

Open the technical drawing in the new window

Available dimensions and tolerances can be found under the tab More information.

Basic Properties (e.g., material, hardness, coating, tolerance) - Polyurethane Rubber Washers

Standard		Configurable Type		Material	Hardness	Color
No Adhesive	Adhesive	No Adhesive	Adhesive	Material	Hardness	Color
WSGC	WSGCA	WSGNC	WSGNCA	Chloroprene Rubber Sponge	Asker C25	Black
WSGP	WSGPA	WSGNP	WSGNPA	Ethylene Rubber Sponge	Asker C8	Black
WSGB	WSGBA	WSGNB	WSGNBA	Nitrile Rubber Sponge	Asker C30	Black
WSEA	WSEAA	WSEPA	WSEPAA	EPT Sealer^®	(Asker C5 or Less)	Black
WSGA	WSGAA	WSGNA	WSGNAA	Silicon Rubber Sponge	Asker C35	Orange
WSGF	WSGFA	WSGNF	WSGNFA	Fluororubber Sponge	Asker C35	Black

For EPT Sealer^® (Dust-proof, General Purpose Sponge), see Here.
Temperature limit for seals is 80°C.

Further specifications can be found under the tab More information.

Composition of a Product Code - Polyurethane Rubber Washers

■Standard

Part Number	-	V	-	T
WSGPA15	-	6	-	5

■Configurable Type

Part Number	-	D	-	V
WSGNA3	-	D12	-	V6

D, V Tolerance

D, V	Tolerance
10~40	±1.0
41~60	±1.5
61~100	±2.0

General Information - Polyurethane Rubber Washers

Rubber washer - rubber sleeve with counterbore - rubber sleeve - rounded rubber damper - foam washer - foam sleeve

Selection details of rubber discs/rubber sleeves

- Material: heat-resistant antistatic, abrasion-resistant, highly abrasion-resistant, low-impact polyurethane rubber (PU/PUR), Vulkollan, ceramic polyurethane rubber, nitrile rubber sponge (NBR), chloroprene rubber (CR), ethylene cautchouc (EPDM), silicone rubber (SI), fluoro-cautchouk (FPM), hard rubber, butyl rubber (IIR), natural rubber, nitrile rubber foam, chloroprene rubber foam, polyethylene foam (EPDM foam), EPT sealing material, Silicone rubber foam, fluoro-rubber foam, special polyurethane foam (SOFRAS), polyester felt, polyester felt

- Hardness: Asker C5 to C35, Asker F75 to F85, Shore A15 to A95

- Versions: disc with bore holes, sleeves with holes, sleeves without holes, sleeves with counterbores, sleeves with external threads, sleeves with collar, dampers with round tip, dampers with conical tip

- Inner diameter: up to 80 mm

- Outer diameter: 6 to 100 mm

- Length: 1 to 10 mm (discs), 10 to 500 mm (sleeves)

Description/Basics

Rubber discs and rubber sleeves, also called rubber buffers, are generally used for vibration damping and impact damping. Rubber sleeves are often used as stopper buffers in industry. Rubber discs are occasionally also used as seals.
Discs and sleeves made of natural rubber are offered in different materials and hardnesses.

While rubber discs are often used for sealing, rubber sleeves are increasingly used as rubber buffers, stopper buffers, or elastomer dampers. MISUMI already offers such a rubber sleeve as a rubber buffer with external thread or counterbore for fastening.
The rubber buffer is also available with a vulcanized metal collar, which not only allows for a firm assembly, but also sits in the anti-backlash rubber sleeve. These adhesives are also available separately. In addition to the material of the rubber buffer, the shape of the stopper buffer is also responsible for the damping characteristic. conical or rounded rubber buffers can also develop a progressive damping curve that generates increasing damping.

Depending on the application and environmental influences, MISUMI offers rubber discs and rubber sleeves in various basic materials with the appropriate resistance. An overview of the intended uses of the respective natural rubber can be found under Natural Rubber Properties as PDF .
The rubber buffers made of polyurethane rubber are also available in an antistatic version. The specific resistance of antistatic rubber discs and rubber sleeves prevents static charging. This can prevent damage to electronic components.
For high temperature applications, MISUMI offers heat-resistant polyurethane rubber, which can withstand temperatures of approx. +120°C (see Specifications for further information).
Vulkollan, on the other hand, is a very abrasion-resistant polyurethane, the abrasion resistance of which is six times higher compared to conventional polyurethane.
Ceramic polyurethane washers and sleeves contain ceramic particles. Despite a low Shore hardness, they can be machined to give them a smooth surface.
MISUMI also offers foam discs and foam sleeves. In addition to damping, these can also have sealing properties. This is achieved by the foam discs due to the closed or semi-closed pores (EPT sealer) inside the material. For semi-closed pores, the pores are sealed under load. Therefore, the type of pores must always be observed for foams in order to select the appropriate foam depending on the application. You can get help for your selection by following this link.
Further properties of natural rubbers and foams can be found in the Properties PDF.
In addition to the aforementioned basic materials, the MISUMI online shop also offers felt discs and felt sleeves. Felt has the properties of capillary action and can absorb and release liquids such as oil. In addition, felt is gentle on sensitive surfaces and is often used for polishing surfaces.

A antivibration materials can also be used for two-sided mounting to dampen vibration.
MISUMI also offers vibration damping and impact damping materials in the form of sheets.

Application Examples - Polyurethane Rubber Washers

Application example - rubber roller with rubber sleeve - rubber roller with roller bearing - roller bearing with axle - running wire

Application example: rubber roller
(1) Rubber sleeve, (2) Roller bearing, (3) Axles / Rotary Shafts, (4) Catch ropes

Application example - cylinder stopper buffer - cylinder end stop - rubber buffer - rubber buffer for cylinder -

Application example: cylinder stopper buffer
(1) Rubber washer, (2) Floating joints, (3) Pneumatic cylinder

Industrial Applications

3D printer industry

Automotive industry

Pharmaceutical industry

Packaging industry

Part Number:

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Part Number
WSGF6-2-3
WSGF8-2-3
WSGF8-3-3
WSGF8-4-3
WSGF10-3-3
WSGF10-3-5
WSGF10-4-3
WSGF10-4-5
WSGF10-5-3
WSGF10-5-5
WSGF10-6-3
WSGF10-6-5
WSGF12-4-3
WSGF12-4-5
WSGF12-5-3
WSGF12-5-5
WSGF12-6-3
WSGF12-6-5
WSGF12-8-3
WSGF12-8-5
WSGF15-4-3
WSGF15-4-5
WSGF15-5-3
WSGF15-5-5
WSGF15-6-3
WSGF15-6-5
WSGF15-8-3
WSGF15-8-5
WSGF15-10-3
WSGF15-10-5
WSGF20-5-3
WSGF20-5-5
WSGF20-5-10
WSGF20-6-3
WSGF20-6-5
WSGF20-6-10
WSGF20-8-3
WSGF20-8-5
WSGF20-8-10
WSGF20-10-3
WSGF20-10-5
WSGF20-10-10
WSGF20-12-3
WSGF20-12-5
WSGF20-12-10
WSGF25-5-3
WSGF25-5-5
WSGF25-5-10
WSGF25-6-3
WSGF25-6-5
WSGF25-6-10
WSGF25-8-3
WSGF25-8-5
WSGF25-8-10
WSGF25-10-3
WSGF25-10-5
WSGF25-10-10
WSGF25-12-3
WSGF25-12-5
WSGF25-12-10

Standard Unit Price	Minimum order quantity	Volume Discount	Standard Shipping Days ?	RoHS	Detailed Material	Hardness (shore, asker)	Type	O.D. D (Ø)	I.D. V (Ø)	Thickness T (mm)	Color	With or w/o Seals
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	6	2	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	8	2	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	8	3	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	8	4	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	3	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	3	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	4	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	4	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	5	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	5	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	6	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	10	6	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	4	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	4	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	5	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	5	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	6	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	6	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	8	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	12	8	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	4	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	4	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	5	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	5	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	6	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	6	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	8	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	8	5	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	10	3	Black	No Seal
5.06 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	15	10	5	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	5	3	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	5	5	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	5	10	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	6	3	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	6	5	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	6	10	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	8	3	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	8	5	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	8	10	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	10	3	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	10	5	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	10	10	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	12	3	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	12	5	Black	No Seal
6.83 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	20	12	10	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	5	3	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	5	5	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	5	10	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	6	3	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	6	5	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	6	10	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	8	3	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	8	5	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	8	10	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	10	3	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	10	5	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	10	10	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	12	3	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	12	5	Black	No Seal
8.72 €	1	Available	8 Days	10	Fluororubber Sponge	Asker C35	Standard Type	25	12	10	Black	No Seal

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Back to the Category Disks/Sleeves (Rubber, Caoutchouc, Foam, Felt)

Technical Drawing - Polyurethane Rubber Washers

Open the technical drawing in the new window

Specification Tables - Polyurethane Rubber Washers

■Standard Type (No Adhesive)

Part Number		V Selection													T Selection			Unit Price
Type	D	V Selection													T Selection			WSGC	WSGP	WSGB	WSEA	WSGA	WSGF
WSGC WSGP WSGB WSEA WSGA WSGF	6	2													3
	8	2	3	4											3
	10		3	4	5	6									3	5
	12			4	5	6	8								3	5
	15			4	5	6	8	10							3	5
	20				5	6	8	10	12						3	5	10
	25				5	6	8	10	12	16	20				3	5	10
	30				5	6	8	10	12	16	20				3	5	10
	35						8	10	12	16	20	25				5	10
	40						8	10	12	16	20	25	30			5	10
	50						8	10	12	16	20	25	30			5	10
	60								12	16	20	25	30	40		5	10

■Standard Type (Adhesive)

Part Number		V Selection													T Selection			Unit Price
Type	D	V Selection													T Selection			WSGCA	WSGPA	WSGBA	WSEAA	WSGAA	WSGFA
WSGCA WSGPA WSGBA WSEAA WSGAA WSGFA	6	2													3
	8	2	3	4											3
	10		3	4	5	6									3	5
	12			4	5	6	8								3	5
	15			4	5	6	8	10							3	5
	20				5	6	8	10	12						3	5	10
	25				5	6	8	10	12	16	20				3	5	10
	30				5	6	8	10	12	16	20				3	5	10
	35						8	10	12	16	20	25				5	10
	40						8	10	12	16	20	25	30			5	10
	50						8	10	12	16	20	25	30			5	10
	60								12	16	20	25	30	40		5	10

■Configurable Type
The unit price of Configurable Type "No Adhesive" is shown in the table below.

Part Number				D 1mm Increment	V 1mm Increment	Unit Price
Type (xMaterial Multiplier)		T	T Tolerance	D 1mm Increment	V 1mm Increment	D10~20	D21~40	D41~60	D61~80	D81~100
WSGNC (x1.0) WSGNP (x1.0) WSGNB (x1.0) WSEPA (x1.0)	WSGNCA (x1.2) WSGNPA (x1.2) WSGNBA (x1.2) WSEPAA (x1.2)	3	±0.5	10~100	0 (No Hole) 5~80 When D≤40, D-V≥5 When D>40, D-V≥8
		5	±0.5
		8	±1
		10	±1			-
WSGNA (x1.0) WSGNAA (x1.2)		3	±0.5
		5	±0.5
		8	±1.5
		10	±1.5			-
WSGNF (x1.0) WSGNFA (x1.2)		2	±0.5
		3
		5
		10	±1.5			-	-

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Shape	Washers (Thickness 1mm~10mm)	Material	Sponge

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Basic Attributes

Hardness (shore, asker)
Asker C5 or Less

Asker C8

Asker C25

Asker C30

Asker C35
Clear
Type
- Configurable Type
- Standard Type
Clear
O.D. D(Ø)
6

8

10

12

15

20

25

30

35

40

50

60
[10-100/1Ø Unit(s)]
Clear
I.D. V(Ø)
0

2

3

4

5

6

8

10

12

16

20

25

30

40
[5-80/1Ø Unit(s)]
Clear
Thickness T(mm)
2

3

5

8

10
Clear
Color
- Black
- Orange
Clear
With or w/o Seals
- No Seal
- With Seal
Clear
Type
- WSEA
- WSEAA
- WSEPA
- WSEPAA
- WSGA
- WSGAA
- WSGB
- WSGBA
- WSGC
- WSGCA
- WSGF
- WSGFA
- WSGNA
- WSGNAA
- WSGNB
- WSGNBA
- WSGNC
- WSGNCA
- WSGNF
- WSGNFA
- WSGNP
- WSGNPA
- WSGP
- WSGPA
Clear
Detailed Material
- Nitrile Rubber Sponge
- Chloroprene Rubber Sponge
- Ethylene (EPDM) Sponge
  - Ethylene Rubber Sponge
- EPT Sealer
- Silicon Rubber Sponge
- Fluororubber Sponge
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Filter by CAD data type
- 2D
- 3D
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Optional Attributes

The specifications and dimensions of some parts may not be fully covered. For exact details, refer to manufacturer catalogs .

Frequently Asked Questions (FAQ)

Question:
What is Vulkollan?: Answer:
Vulkollan is a highly abrasion-resistant polyurethane rubber that has high wear resistance. It is one of the high-performance rubbers that has little pressure deformation and can withstand high impact forces. In addition, Vulkollan has a high tear strength. However, over time Vulkollan may change its colour, but without losing its mechanical properties.
Question:
Which rubber is resistant?: Answer:
Vulkollan is an abrasion-resistant material. It has an approx. six-fold higher abrasion resistance than conventional polyurethane materials. Vulkollan is particularly suitable for applications where high abrasion is expected.
Question:
Which rubber washer is oil-resistant?: Answer:
A rubber disc made of nitrile rubber (NBR) is highly resistant to various oils. This material is often used as a seal due to its good heat resistance and abrasion resistance.
Question:
Can a rubber sleeve be glued?: Answer:
A rubber sleeve or rubber disc can be stuck in or glued in. However, it must be ensured that the correct adhesive is selected in relation to the material of the elastomer. If this is not taken into account, the adhesive does not have the desired effect or even attack and degrade the elastomer. In addition, the adhesive should support the respective property of the material, e.g., antistatic or temperature resistance.