FKM Viton O Ring

Key Features

Highly resistant to many chemicals.
Excellent aging characteristics.
Low compression set.
Wide range of chemical compatibility.
Withstands wide temperature range.
Ideal for high vacuum applications.
Resistant to mineral and vegetable oils

Exactseal offers high-quality FKM Viton O rings designed to provide superior sealing performance in a wide range of applications. Fluorocarbon rubber, also known as FKM Viton, is considered the most significant elastomer developed in recent history. Due to its excellent aging characteristics, low compression set, and wide range of chemical compatibility, it is widely used in various industries. Additionally, we craft our FKM Viton O rings from premium fluoroelastomer materials, ensuring exceptional resistance to heat, chemicals, and environmental factors. Industry professionals such as automotive, aerospace, and manufacturing trust our O rings for critical sealing applications due to their excellent durability and reliability.

Need custom or specialty FKM/Viton O-rings?

Standard AS 568 sizes, metric, non-standard cross-sections, and large-diameter spliced & vulcanized rings — send your size, durometer, and quantity for a fast quote. Production runs and OEM prototypes welcome.

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About FKM (Viton®) O-Rings

FKM — commonly known by the Viton® trade name — is a fluoroelastomer prized for outstanding resistance to heat, fuels, oils, and a wide range of aggressive chemicals. It’s a go-to choice where other rubbers break down.

Typical applications

  • Fuel, oil, and chemical handling
  • High-temperature sealing
  • Aerospace, automotive, and process equipment
  • Aggressive-media valves and pumps

Standard & Custom Sizes

We supply FKM (Viton®) 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 FKM (Viton®) 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 →

FKM Viton O Rings: Premium Sealing Solutions for Demanding Applications

FKM Viton O rings are renowned for their versatility and compatibility with a wide range of fluids and environments. They provide reliable sealing performance in demanding applications. Whether it’s sealing automotive fuel systems, hydraulic equipment, or industrial machinery, our O rings deliver. They have the ability to withstand temperatures ranging from -20°C to 200°C (-4°F to 392°F). Also, they resist oils, fuels, and chemicals. FKM O rings offer reliable sealing solutions for a variety of industries and applications.

Custom O Rings for Specific Requirements

Exactseal specializes in custom O rings tailored to meet the specific requirements of each application. Whether you need standard metric Viton O rings or custom-designed O rings for specialized applications, our team works closely with you to develop solutions that address your unique sealing challenges. We have expertise in material selection, design optimization, and manufacturing techniques. This enables us to create O rings that meet your exact specifications and performance requirements.

Premium Quality Materials

Our FKM Viton O rings are crafted from premium fluoroelastomer materials, ensuring exceptional performance and durability. Unlike traditional rubber O rings, Viton O rings offer superior resistance to heat, chemicals, and environmental factors, making them ideal for use in demanding applications where standard elastomers would fail. With their excellent compression set resistance and long-term sealing performance, FKM O rings provide reliable sealing solutions for critical applications.

Why Choose Exactseal for FKM Viton O Rings?

Premium Fluoroelastomer Materials: We craft our FKM Viton O rings from premium fluoroelastomer materials. This ensures exceptional resistance to heat, chemicals, and environmental factors.

Customization Options: We offer custom O rings in a variety of sizes, shapes, and materials. These meet your specific application requirements, including metric Viton O rings and custom-designed O rings.

Versatile Sealing Performance: Our O rings provide reliable sealing performance in a wide range of applications. These include automotive, aerospace, and manufacturing.

Expertise: With years of experience in O ring manufacturing, our team provides expert advice and support. This helps you find the right sealing solution for your specific application needs.

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Specifications

ApplicationIdeal for high temperature and chemical exposure environments
Product NameFKM Viton O-Ring
Hardness (Shore A)70-90
MaterialSilicone, Silicone Sponge, EPDM, EPDM Sponge, Nitrile (Buna N), FKM (Viton), FFKM (Kalrez), Neoprene, TPV (Santoprene), TPE
ColourTypically black or brown

Applications

Automotive: Fuel system sealing and heat resistance.
Aerospace: Sealing in high temperature environments.
Oil and Gas: Resistant to petroleum products.
Chemical Processing: Resistant to various chemicals.
Power Generation: Sealing in high temperature applications.
Food and Beverage: Compatible with food-grade applications.

Technical Information

PropertyValue
MaterialFKM (Fluorocarbon Elastomer)
Hardness (Shore A)70-90
Operating Temperature Range-26°C to +205°/230°C (-15°F to +400°/440°F)
ResistanceExcellent resistance to heat, oil, and chemicals
Compression SetLow
Aging CharacteristicsExcellent
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