Sponge washer / standard (WSGAA25-20-10)

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MISUMI

Product Details:

Manufacturer part number: WSGAA25-20-10

Brand: MISUMI

Price: 6.08 €

Delivery time: 7 Days

Technical Data:

Detailed Material: Silicon Rubber Sponge

Hardness (shore, asker): Asker C35

Type: Standard Type

O.D. D: 25 Ø

I.D. V: 20 Ø

Part Number

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WSGAA25-20-10

Drawing / Specifications
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Technical Information

Dimensional Drawing

(No Adhesive)

(Adhesive)

D, V Tolerance

D·V	Tolerance
2 to 40	±1.0
41 to 60	±1.5
61 to 100	±2.0
101 to 150	±2.5
151 to 200	±3.0

Standard		Configurable Type		[M] Material	[H] Hardness	Color
Seal No Adhesive	Seal Adhesive	Seal No Adhesive	Seal Adhesive	[M] Material	[H] 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

[ ! ] The raw material for fluorine is "Viton FKM."
[ ! ]Temperature limit for seals is 80°C.

■Characteristics of Sponges

Item	Unit	Polyurethane Sponge	Chloroprene Rubber Sponge	EPDM Sponge	NBR Sponge	Silicon Rubber Sponge		Fluorinerubber sponge
Item	Unit	Polyurethane Sponge	Chloroprene Rubber Sponge	EPDM Sponge	NBR Sponge	HS35	HS15	Fluorinerubber sponge
Apparent Density	g/cm³	0.022	0.18	0.09 to 0.15	0.21	0.35 to 0.37	0.3	0.45
Air Bubble	-	open cell structure	closed cell structure	closed cell structure	closed cell structure			closed cell structure
Tensile Strength	Mpa (kgf/cm²)	≥ 0.076 { ≥ 0.77}	0.9 {9}	0.4 {4}	0.8 {8}	1.6 to 1.8 {16 to 18}	1 {10}	2.7 {27}
Elongation	%	≥ 120	170	180 or More	200	200 to 250	250	280
25% Compression Load	Mpa (kgf/cm²)	-	5.3 × 10^-2 {0.54}	3.1 × 10^-2 {0.32}	6.5 × 10^-2 {0.66}	- (* 1)	- (* 3)	- (* 1)
Continuous Use Temperature*2	°C	-10 to 70	-35 to 130	-40 to 130	-10 to 140	-70 to 200		-20 to 230
Abrasion Resistance		◎	○	○	◎	△		◎
Anti-Aging		○	◎	◎	○	◎		◎
Water Resistance		△	○	○	○	○		◎
Chemical Resistance	Oil (Gasoline)	○	○	✖	◎	△		◎
	Acid	✖～△	○	✖～ ○	△～ ○	△～ ○		◎
	Alkali	✖	◎	○	○	◎		△～ ○
	Organic Solvent	✖	✖～△	✖	✖～△	✖		✖～ ○

[ ! ] For Adhesive Type, the adhesion strength decreases under high temperature (at approximately 80°C or more).
* 1 Compression Set "40% During Compression" (100°C/24 h) 29%
* 2 The temperature of continuous use is the temperature where long-term use does not cause a sharp decline in quality.
* 3 Compression Set "40% During Compression" (150°C/24 h) 8% (Based on JIS K6250)

Specification Table

● Standard type

Part Number	—	V	—	T
WSGPA15	—	6	—	5

● Configurable Type

Part Number	—	D	—	V
WSGNA3	—	D12	—	V6

■Standard (No Adhesive)

Part Number		V Selection													T Selection
Type	D	V Selection													T Selection
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 (Adhesive)

Part Number		V Selection													T Selection
Type	D	V Selection													T Selection
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

Part Number				D 1 mm increments	V 1 mm increments
Type (× Material Multiplier)		T	T Tolerance
WSGNC ( × 1.0) WSGNP ( × 1.0) WSGNB ( × 1.0) WSEPA ( × 1.0)	WSGNCA ( × 1.2) WSGNPA ( × 1.2) WSGNBA ( × 1.2) WSEPAA ( × 1.2)	3	±0.5	10 to 200	0(No Hole) 5 to 190 [ ! ] When D ≤ 40 D－V ≥ 5 When D > 40, D－V ≥ 8
		5
		8	±1
		10
WSGNA ( × 1.0) WSGNAA ( × 1.2)		3	±0.5
		5
		8	±1.5
		10
WSGNF ( × 1.0) WSGNFA ( × 1.2)		2	±0.5	10 to 100
		3
		5
		10	±1.5

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Part Number
WSGAA25-20-10

Part Number	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
	6.08 €	1	Available	7 Days	10	Silicon Rubber Sponge	Asker C35	Standard Type	25	20	10	Orange	With Seal

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

Products homepage

Basic information

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

This page is Sponge washer / standard, part number WSGAA25-20-10.
You can find the detail information about specifications and dimensions on part number WSGAA25-20-10.

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Basic Attributes

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
Clear
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
Clear
I.D. V(Ø)
0

2

3

4

5

6

8

10

12

16

20

25

30

40
Clear
Thickness T(mm)
2

3

5

8

10
Clear
Color
- Black
- Orange
Clear
With or w/o Seals
- No Seal
- With Seal
Clear
Filter by CAD data type
- 2D
- 3D
Clear

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.

Show more FAQ Close

Variation of this product

Part Number
WSEA10-4-5
WSEA10-5-3
WSEA10-5-5
WSGAA25-20-3
WSGAA25-20-5
WSGAA25-5-10

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
3.79 €	1	Available	7 Days	10	EPT Sealer	Asker C5 or Less	Standard Type	10	4	5	Black	No Seal
3.79 €	1	Available	7 Days	10	EPT Sealer	Asker C5 or Less	Standard Type	10	5	3	Black	No Seal
3.79 €	1	Available	7 Days	10	EPT Sealer	Asker C5 or Less	Standard Type	10	5	5	Black	No Seal
6.08 €	1	Available	7 Days	10	Silicon Rubber Sponge	Asker C35	Standard Type	25	20	3	Orange	With Seal
6.08 €	1	Available	7 Days	10	Silicon Rubber Sponge	Asker C35	Standard Type	25	20	5	Orange	With Seal
6.08 €	1	Available	7 Days	10	Silicon Rubber Sponge	Asker C35	Standard Type	25	5	10	Orange	With Seal