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  • Detailed Material
    • Standard Urethane
  • Hardness (shore, asker)
  • O.D. D(Ø)
  • I.D. V(Ø)
  • Thickness T(mm)
  • Type
  • CAD

Polyurethane washers / self-adhesive (URWHS25-12-3)

Cod piesă:

URWHS25-12-3
Ștergeți
Cantitate:

Desen de ansamblu și tabel de specificații

Dimensional Drawing

(Adhesive)


TypeType[M] Material[H] HardnessColor
Urethane Washers
Adhesive
URWHSStandard Urethane
(Ether Polyurethane)
Shore A90Natural Color
URWMSStandard Urethane
(Ester Polyurethane)
Shore A70
[ ! ]Temperature limit for seals is 80°C.

Specification Table

Part NumberVT
URWHS20105
TypeD
Selection
V
Selection
T
Selection
Tolerance
T1·3T5
DVDV
Adhesive834      13 ±0.60 to +0.6±0.70 to +0.7
URWHS103456    135
(Shore A90)12  568   135±0.80 to +0.8±0.90 to +0.8
 15   6810  135
URWMS20    81012  35±0.90 to +0.9±1.00 to +1.0
(Shore A70)25     101216 35
 30     101216 35

Lista codurilor de piese

Număr de articole
Cod piesă
URWHS25-12-3

Detailed Material

Hardness (shore, asker)

O.D. D

(Ø)

I.D. V

(Ø)

Thickness T

(mm)

RoHS?Cantitate minimă per comandă
[Standard Urethane] Ether Polyurethane
Shore A90
25
12
3
10
1 bucăți
Preț unitar (fără TVA)(preț unitar cu TVA incluse)
Dată de expediere standard
3.29 €
( 3.92 € )
7 zile lucrătoare

Informații detaliate

Informații de bază

Desen de ansamblu și specificații

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