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O-Rings
Washers can be specified in ANSI nominal sizes or ANSI metric sizes. Important size dimensions to consider when specifying washers include Inside Diameter, Outside Diameter, Thickness or working Height, and rated or working load. Materials of construction include Aflas, FKM, SILICON, EPDM, NBR, NEOPRENE, PTFE, PU, SBR & NATURAL. The hardness rating on a Shore A scale for Washers can be 30 ~ 95 Durometer. Exact specifications should be clarified by our engineers, as the chemical and physical properties of Washers can differ based on manufacturing technique.
Washers
Rubber washers are small, circular or flat components made from rubber, designed to create a secure, leak-proof seal for fluids, gases, and air. They are widely used across various industries, including plumbing, automotive, electronics, and construction.
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Description
Material Selection Guide
| MATERIAL | NR | SBR | NBR | CR | EPDM | HNBR | ACM | CSM | SILICONE | FKM (VITON) |
|---|---|---|---|---|---|---|---|---|---|---|
| HARDNESS RANGE (SHORE A) | 40-90 | 35-90 | 40-90 | 40-80 | 40-90 | 40-90 | 40-80 | 40-80 | 30-80 | 50-90 |
| HIGH TEMP oC | 100 | 120 | 130 | 130 | 150 | 150 | 180 | 150 | 230 | 225 |
| LOW TEMP oC | -50 | -55 | -45 | -40 | -50 | -45 | -25 | -40 | -60 | -15 |
| STEAM | F | F | F | P | G | G | P | E | E | E |
Related products
You have questions.
We have answers.
What are rubber washers used for?
Rubber washers create a tight seal between two surfaces, preventing leakage of liquids, gases, or contaminants. They also absorb vibration, reduce noise, and bolster assemblies.
What materials are Kesaria’s rubber washers available in?
Kesaria manufactures washers from high-grade elastomers such as EPDM, Neoprene, Nitrile (NBR), Viton, and Silicone, depending on application requirements like chemical resistance, temperature tolerance, and durability.
Can rubber washers withstand extreme temperatures?
Yes. Depending on the material, rubber washers can handle a wide range of temperatures. For example:
- Silicone washers can tolerate up to +200°C,
- EPDM works well in hot water and steam,
- Nitrile (NBR) is suitable for oil-resistant applications.
Do rubber washers resist chemicals and oils?
Not all rubber is the same. Nitrile and Viton offer excellent oil and fuel resistance, while EPDM resists water, steam, and certain chemicals. Kesaria helps customers choose the right washer material based on their specific environment.
Can Kesaria provide custom sizes and designs?
Yes. Kesaria specializes in customized rubber washers with specific diameters, thicknesses, hardness levels, and material grades, ensuring compatibility with client applications across industries like automotive, plumbing, and machinery.