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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.
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Rubber Washers Manufacturer & Supplier — Kesaria Rubber Industries
- ISO Aligned Quality Systems
- Zero Rejection Track Record
- 5,000+ Active SKUs
- Exporting to 27+ Countries
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. 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.
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.
- 30–95Shore A hardness range
- −60°C to 230°CTemperature range
- 5,000+Active SKUs
- 1,400+Valued customers
- 35+Years of manufacturing
- 27+Countries served
Material of Construction
Kesaria manufactures rubber washers from high-grade elastomers. Material selection is based on chemical compatibility, service temperature, sealing pressure, and working atmosphere. Materials of construction include Aflas,
FKM, Silicone, EPDM, NBR, Neoprene, PTFE, PU, SBR and Natural Rubber.
NR — Natural Rubber
- Hardness: 40–90 Shore A
- High temp: 100°C
- Low temp: −50°C
- Excellent abrasion resistance
SBR
- Hardness: 35–90 Shore A
- High temp: 120°C
- Low temp: −55°C
NBR — Nitrile Rubber
- Hardness: 40–90 Shore A
- High temp: 130°C
- Low temp: −45°C
- Superior oil & fuel resistance
Neoprene (CR)
- Hardness: 40–80 Shore A
- High temp: 130°C
- Low temp: −40°C
EPDM
- Hardness: 40–90 Shore A
- High temp: 150°C
- Low temp: −50°C
- Excellent steam & weather resistance
HNBR
- Hardness: 40–90 Shore A
- High temp: 150°C
- Low temp: −45°C
- High mechanical strength
Silicone
- Hardness: 30–80 Shore A
- High temp: 230°C
- Low temp: −60°C
- Excellent steam resistance
FKM — Viton®
- Hardness: 50–90 Shore A
- High temp: 225°C
- Low temp: −15°C
- Outstanding chemical & heat resistance
PTFE & PU
Non-reactive, water-resistant, minimal friction, and stands up well against various chemicals.
This guide is intended for general reference only. The materials listed are the most commonly used. There are numerous compound variations designed for specific applications — please forward details to our engineers for recommendation.
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 |
Types of Rubber Washers
Rubber washers can form a secure, leak-proof seal for fluids, gases, and air. They also absorb vibration, reduce noise, and bolster assemblies. Washers are specified in ANSI nominal or ANSI metric sizes as flat components with defined Inside Diameter, Outside Diameter, and Thickness.
Size & Specification Range
Inside Diameter (ID)
Custom specification as per application requirements. Clarified by Kesaria engineers.
Outside Diameter (OD)
Custom specification as per application requirements. Available in ANSI nominal and metric sizes.
Thickness / Working height
Custom specification as per application requirements and rated/working load.
Hardness range
30 ~ 95 Shore A Durometer – flexible to rigid applications.
Temperature range
−60°C to +230°C depending on material selection.
Sizing standards
ANSI nominal sizes and ANSI metric sizes. Custom profiles also available.
How Rubber Washers Helps You
Rubber washers aren’t just fillers. They are silent protectors of performance and reliability. Tailored material options and precision manufacturing to meet your toughest challenges – from plumbing to high-pressure industrial machinery.
Maintain consistent pressure and prevent leaks
Extend the life of machinery and joints - reduced leakages and system downtime
Improve energy efficiency and reduce waste
Enhance workplace safety and compliance with industry standards and regulations
Wide material selection: NR, NBR, EPDM, Silicone, Viton, and more - for diverse environments
Temperature resistance from −60°C to 230°C
Shore A hardness range of 30–95 for flexible to rigid applications
Custom sizes and technical support from expert engineers
Longer equipment lifespan and fewer replacements with 35+ years of sealing expertise
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Driven by innovation and dedication to customer satisfaction, with enriched experience of more than 35 years. 100% Quality & Quantity – On Time & Every Time.
FAQ
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 - used widely in plumbing, automotive, electronics, and construction.
What materials are Kesaria's rubber washers available in?
Kesaria manufactures washers from Aflas, FKM (Viton®), Silicone, EPDM, NBR (Nitrile), Neoprene (CR), PTFE, PU, SBR, and Natural Rubber - depending on application requirements like chemical resistance, temperature tolerance, and durability.
What is the temperature range for rubber washers?
Temperature performance depends on the material selected:
Silicone washers: −60°C to +230°C - suitable for high-temperature and steam applications
FKM (Viton®): −15°C to +225°C - outstanding chemical and heat resistance
EPDM: −50°C to +150°C - excellent for hot water and steam environments
NBR (Nitrile): −45°C to +130°C - suitable for oil-resistant applications.
Do rubber washers resist chemicals and oils?
Not all rubber is the same. Nitrile (NBR) and FKM (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 working environment and chemical exposure.
Can Kesaria provide custom sizes and designs?
Yes. Kesaria specialises in customised rubber washers with specific diameters, thicknesses, hardness levels, and material grades. Washers can be specified in ANSI nominal sizes or ANSI metric sizes. Important size dimensions - Inside Diameter, Outside Diameter, Thickness, and working load - are clarified by Kesaria engineers to ensure compatibility with your application.
What is the hardness range available for rubber washers?
The hardness rating on a Shore A scale for Kesaria rubber washers ranges from 30 to 95 Durometer - covering flexible to rigid applications. Exact hardness specifications are confirmed by our engineers based on your operating conditions.
What quality standards do Kesaria rubber washers comply with?
Kesaria follows ISO aligned quality systems with a zero rejection track record confirmed by clients including Caparo Maruti Ltd., Kohler India, and Astral Poly Technik Ltd. The company holds IATF, ISO 9001:2015, ISO 14001, ISO 45001, WRAS, ZED Gold, and NSF certifications. Each batch undergoes rigorous quality checks to ensure leak-proof, high-accuracy sealing components.
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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 |
