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

At Exactseal, we specialize in the manufacturing of high-quality FKM O rings (Fluorocarbon Viton), as well as FFKM O Rings (Perfluorocarbon Kalrez and its substitute like AFLAS, Tecnoflon, Chemraz – all registered trademark of respective organizations). These O-rings are made from fluorocarbon or perfluorocarbon (higher fluorine contents) elastomers, a type of synthetic rubber that is highly resistant to many chemicals, oils, and heat and is ideal for pharmaceutical, oil & gas as well as chemical industries.

FKM Viton, also known as fluorocarbon rubber, is considered the most significant elastomer developed in recent history. It is widely used in various industries due to its excellent aging characteristics, low compression set, and wide range of chemical compatibility.

Our FKM O-Rings and FFKM O-Rings can withstand a wide temperature range from -26°C to +205°/230°C (-15°F to +400°/440°F) and offer resistance to more than 1800 chemicals making these O-rings ideal for universal application across demanding industries like pharmaceuticals, oil & gas, chemical manufacturing, defense & aerospace, to food and beverages, as well as semiconductor processing.

Our FKM Viton and FFKM Kalrez O Ring (incl O rings made from their alternative materials) are highly resistant to mineral oils, vegetable oils, hydrocarbons (diesel fuels, petrol/gasoline, kerosine, jet fuels), greases, non-flammable hydraulic fluids, organic solvents and 1800+ chemicals including acids, aromatic and chlorinated hydrocarbons, and aliphatic compounds. This makes them ideal for use in aircraft, automobiles, discrete manufacturing, chemical manufacturing, dairy, beverage industries, pharmaceuticals manufacturing, etc with high vacuum, high pressure, high temperature, and highly corrosive applications.

At Exactseal, we are committed to providing our customers with the highest quality FKM Viton O Ring. We believe in the power of this remarkable material and are dedicated to helping our customers find the best sealing solutions for their specific needs. Get a free quote now for your requirements for this type of O-ring and also explore our other O-ring.


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


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

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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