Delivering Fluid Sealing Solutions Since 1972

Viton O Rings

Available From UK Stock – Viton O Rings, FPM / FKM Seals

M Barnwell Services is one of the UK’s leading stockist and distributors of Viton O Rings (and other FKM / FPM). With over 50 million O Rings and Back-Up Rings in stock, we supply to over 5000 customers worldwide quickly and reliably. Our experienced team will guide all aspects of production, including prototyping, testing, and final part manufacture as well as issuing specific certification when available.

If you would like more information about our range of download our catalogue, or contact a member of the team.

Viton O Ring Benefits?

Viton™ O Rings and FKM O Ring materials have excellent resistance to ageing, ozone, very low gas permeability (excellent for vacuum application) and the fact that it is self-extinguishing. The Viton™ material is also resistant to oils, acids, and silicone fluids. Other key benefits include a temperature resistance range from -20°C to +205°C (or intermittent between -45°C and +230°C). This makes it ideal for applications within the Agricultural, AutomotiveAerospace and DefencePetrochemical, Offshore Drilling, and Rail industries.

All these characteristics creates a superior seal. You can read more about these superiorities on the Nitrile (NBR) vs. Viton™ comparison page.

For further details about Viton™ O Rings and FPM / FKM O Rings visit the Material Properties page.

Viton O Rings

Why Industries Use Viton O Rings?

The Viton™ material is ideal for the use in the most harshest of application environments. Where chemical interplay and extreme temperatures are frequent, the Viton™ material rubber is the leading hard wearing fluoroelastomer compound. The proven high performance and excellent durability makes it a top pick for many specialist engineers.

M Barnwell Services Viton Compound Alternatives

  • MBMS0254 (Lead-free FKM / FPM)
    Properties – Excellent resistance to steam, hot water and chemicals. Superior sealing performance. Operating Temperature -15°C to +200°C
    Applications – Heat Exchangers, Pulp & Paper processing equipment, Marine diesel engines, Steam/Hot water systems
  • MBMS 0056 (High fluorine content FKM/FPM)
    Properties – Excellent resistance to FUELS and SOVENTS. Operating Temperature -15°C to +250°C
    Applications – Biofuel processing equipment, Marine diesel engines, Heat Exchangers and Pulp and Paper processing equipment.
  • MBMS0297 (FKM/FPM)
    Properties – Excellent EXPLOSIVE DECOMPRESSION (ED) RESISTANCE & LOW TEMPERATURE CAPABILITY. Tested to NORSOK M-710 standard. Good compression set. With a wide Operating Temperature range -35°C to +225°C
    Applications – LOW temperature and HIGH pressure applications, Compressors, Subsea Valves & Pumps, Drilling and Exploration equipment
  • MBMS0269 (FKM /FPM)
    Properties – EXPLOSIVE DECOMPRESSION (ED). Tested to NORSOK M-710 standard and TOTAL spec. GS PVV 142 03/01 Also tested to the NACE standards TM0297 (Explosive Decompression) & TM0187 (Sour Gas). With a wide Operating Temperature range of -18°C to +225°C this compound offers outstanding mechanical strength and high pressure performance
    Applications -HIGH pressure applications including Blow-out preventers (BOP’s), Subsea Valves & Pumps, Drilling and Exploration equipment

Information About Viton

Viton™ is a trademark of The Chemours Company FC, LLC. M Barnwell Services does not manufacture Viton™ products. There are many grades of DuPont® Viton™ that we have available such as Viton™, Viton™ A, Viton™ B, Viton™ GF, Viton™ GLT, Viton™ GFLT, Viton™ ETP. Common colours include Black, Brown and Green in a variety of shore hardness.

You can learn more about the differences between FKM Seals and Nitrile Seals here – Comparison of two of the most commonly used elastomers – Viton™ O Rings vs Nitrile O Rings. E & OE.


No limitation to dimensions with over 10,000 different sizes available from stock


Viton® (FKM/FPM)

(Viton® is the registered trade mark of DuPont® Performance Elastomers.)


O-Ring Metric and Imperial Kits, Selection Boxes, Splicing Kits & Top-up Bags are available

Bespoke O Ring Kits and selection Boxes are also available

Associated Products

Encapsulated O-Rings (FEP/PFA), Lube, Gauge / O Ring material tester, Quad Rings® (X-Rings) / Nu-lip Rings, O-Ring Cord, Tube, Anti-extrusion Rings, Splicing Kits, Back-up Rings, Anti-extrusion Rings, Lubricants and Adhesives