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O-Rings in Viton and NBR Rubber from Polymax

More than 3000 different sizes available in the ever popular Bristish Standard ( AS-568 ) O-rings are available to buy online in NBR, NBR metric range and Viton ®.

For other polymers (EPDM, CR, PTFE) and metric viton sizes, please do not hesitate to contact us

BS 1806 British standard for inch series O-rings. This standard is derived from SAE AS-568B.
BS 4518 British standard for metric series O-rings.BS 4518 incorporates European practices used for sealing components against fluids under dynamic and static conditions.

View rubber O-rings, seals, cords and extruded profiles

NBR (N70)		Viton® (V75)
(Click to view range and order)		(Click to view range and order)
Nitrile (or NBR) O-Rings are most commonly available and are cost effective.Ideal for use as seals on pumps, drive belts, and other general engineering applications. NBR is good for applications that need to withstand fats, Greases and high temperature (+70°C). For automotive applications requiring contact with petrol or diesel you may wish to consider Polymax Viton o ring kits Temperature range -30ºC to +120ºC (avoid prolonged use at higher extremes) Suitable for: Many hydrocarbons, fats, oils gasoline, petroleum based hydraulic fluid etc Generally attacked by: Ozone, esters, retones, aldehydes, chlorimated, and nitro hydrocarbons		Viton® O Rings have a low compression set and have high temperature and chemical resistance.As such they are more expensive than NBR O Rings . Temperature range -20ºC to +200ºC (avoid prolonged use at higher extremes) Suitable for: chlorinated solvents, synthetic lubricants, diesel fuel, petroleum oils and most hydrocarbons Generally attacked by: Hydrogen sulphide, furfaral, formaldehyd methanol ketone, potassium hydroxide