EPDM O Ring

Key Features

High Durability
Temperature Resilient
Good Chemical Resistance
UV and Ozone Resistant
Good Abrasion Resistance
Food Safe
Excellent Electrical Insulation

EPDM O rings are indispensable components used across a multitude of industries for sealing applications. EPDM, or Ethylene Propylene Diene Monomer, is a type of synthetic rubber known for its outstanding mechanical properties. Additionally, It’s highly durable and resistant to numerous environmental factors. This makes EPDM O-rings incredibly versatile, and suitable for a broad spectrum of applications across various industries. At Exactseal, we pride ourselves on offering an extensive array of O rings meticulously engineered to deliver dependable sealing solutions for a myriad of applications.

Need custom or hard-to-find EPDM O-rings?

Standard and non-standard sizes, metric, and large-diameter spliced & vulcanized EPDM rings — send your size, durometer, and quantity. Fast quotes for production runs and OEM prototypes.

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About EPDM O-Rings

EPDM is valued for excellent weather, ozone, UV, and steam resistance, and it performs well with water and many polar fluids. It is not suited to petroleum oils and fuels — where NBR or FKM are usually the better fit.

Typical applications

  • Outdoor and weather-exposed seals
  • Water, steam, and hot-water systems
  • HVAC and appliance sealing
  • Brake systems and glycol-based fluids

Standard & Custom Sizes

We supply EPDM O-rings in standard AS 568 sizes, metric sizes, and non-standard cross-sections — plus large-diameter rings spliced & vulcanized from cord when a molded size isn’t available. Send your size, durometer, and quantity for a fast quote.

How It Compares

Where your seal sees mixed conditions, this table shows how common compounds stack up:

Material Heat Oil & Fuel Weather & Ozone Water & Steam Acids & Chemicals
FKM (Viton®) Excellent Excellent Excellent Good Excellent
EPDM Good Poor Excellent Excellent Good
NBR (Buna-N) Fair Excellent Poor Good Fair
Neoprene (CR) Good Good Good Good Fair
Silicone (VMQ) Excellent Fair Excellent Fair Fair
HNBR Good Excellent Good Good Good

General elastomer selection guidance only — the right compound depends on your temperature, media, and pressure. Ask our team for a material recommendation.

Frequently Asked Questions

Do you stock standard EPDM O-rings?
We supply standard AS 568 and metric sizes to order, and make non-standard and large-diameter sizes custom. We quote fast — we don’t sell single pieces online.
Can you match a durometer or color?
Yes — tell us the hardness (Shore A) and any color or compliance needs and we’ll confirm what we can supply.
What about sizes that aren’t molded?
We splice and vulcanize cord into large-diameter or non-standard O-rings sized to your exact ID.

Request a Quote →

EPDM O Rings: Reliable Sealing Solutions for Diverse Applications

Renowned for their versatility and durability, EPDM rubber O rings are the go-to choice for sealing solutions in a wide spectrum of industries. They demonstrate remarkable resistance to extreme temperatures, aggressive chemicals, and harsh environmental conditions. Our comprehensive selection of O rings encompasses various sizes, shapes, and hardness levels. This ensures compatibility with diverse sealing requirements. From automotive and HVAC to plumbing and general sealing applications, EPDM Rubber O rings excel across industries.

We design our EPDM O rings to withstand extreme temperatures, ranging from as low as -60°F/-50°C to up to 300°F/150°C. Also, our O Rings resist hot water and steam. This makes them ideal for automotive and aerospace industries where applications involve extreme temperatures.

In the automotive industry, our O-rings find application as sealing gaskets, fuel fittings, and hose connections. In the aerospace industry, they are valued for their reliable resistance to chemicals and their ability to withstand extreme temperatures.

However the applications of our O-ring extend beyond these industries. They also find application in the food industry, medical devices, household appliances, and water and wastewater systems. Their superior properties make them one of the most popular choices for these industries.

Customized Solutions for Your Sealing Needs

Recognizing the unique nature of every sealing application, Exactseal offers tailored EPDM O ring solutions designed to meet your specific requirements. Whether you seek standard metric O ring sizes or bespoke O rings engineered for specialized applications, our team collaborates closely with you. We have seasoned engineers and technicians. We develop solutions that address your distinct sealing challenges. Leveraging our expertise in material selection, design optimization, and manufacturing techniques. These precisely align with your specifications and performance criteria.

Ensuring a Perfect Seal with EPDM O Rings

Engineered to deliver a tight and secure seal in a myriad of applications, EPDM Rubber O rings exhibit exceptional compression set resistance and elastic properties. Whether deployed as static seals or dynamic seals, they guarantee a flawless seal even in the most demanding conditions. Stringent quality control measures ensure consistent performance and reliability in the production of our EPDM O rings. Moreover, with their superior sealing properties, O rings play a pivotal role in preventing leaks and contamination, safeguarding the integrity of your systems and equipment.

Why Choose Exactseal?

High-Quality EPDM Material: We meticulously craft our O rings from premium EPDM rubber material. Which ensuring unmatched durability and resilience against weathering, ozone, and UV exposure.

Customization Options: We also offer a comprehensive range of customization options for O ring. This includes standard metric sizes and tailor-made solutions engineered to your precise specifications.

Versatile Applications: EPDM O rings find application across a diverse array of industries, including automotive, HVAC, plumbing, and general sealing applications, showcasing their adaptability and versatility.

Expertise: With years of experience in O ring sizing, design, and manufacturing, our team boasts unparalleled expertise and dedication to delivering superior sealing solutions tailored to your unique requirements.

Specifications

ApplicationUsed in automotive, aerospace, food industry, medical devices, household appliances, and water and wastewater systems due to its outstanding mechanical properties
Product NameEPDM O-Ring
Hardness (Shore A)Typically around 70, but can range from 40 to 90
MaterialSilicone, Silicone Sponge, EPDM, EPDM Sponge, Nitrile (Buna N), FKM (Viton), FFKM (Kalrez), Neoprene, TPV (Santoprene), TPE
ColourStandard color is black, but custom colors are available

Applications

Automotive: Sealing gaskets, fuel fittings, hose connections
Aerospace: Resistant to chemicals, withstands extreme temperatures
Food Industry: Suitable for food processing applications
Medical Devices: Used in respiratory equipment, pumps
Household Appliances: Used in washing machines, refrigerators
Water Systems: Ensures proper sealing in water systems

Technical Information

PropertyValue
MaterialEthylene Propylene Diene Monomer (EPDM)
Temperature Range-50°C to +120°/150°C
ResistanceHeat, water, steam, alkali, mild acidic and oxygenated solvents, ozone, and sunlight (UV)
IncompatibilityGasoline, petroleum oil and grease, and hydrocarbon environments
Hardness (Shore A)Typically around 70, but can range from 40 to 90
  • Silicone O Ring, Spliced and Vulcanized O Ring, VMQ O Ring by Exactseal

    Silicone O Ring

  • FKM (Viton) O Ring or Fluorocarbon O Ring

    FKM Viton O Ring

  • Nitrile (NBR) O Rings by Exactseal

    NBR O Ring

  • Neoprene or Chloroprene Rubber O Rings

    Neoprene O Ring

  • Closed cell sponge o ring

    Sponge O Ring

  • FFKM O Rings

  • teflot o rings

    PTFE (Teflon) O Rings