Nitrile Butadiene Rubber (NBR)

NBR nitrile rubber sealing material with excellent oil resistance for O-rings and industrial seals

Nitrile butadiene rubber or nitrile rubber is copolymerized by acrylonitrile and butadiene with acrylonitrile content ranging from 18% to 50%. Nbr is one of the most commonly used rubbers for oil seals and O-rings.

Advantages:

– Good resistance to oil, water, solvent and high-pressure oil.
– Low permanent compression set value, good abrasion resistance and elongation.

Disadvantages:

– Not suitable for use in polar solvents such as ketones, nitrohydrocarbons, MEK and chloroform. It has poor weather resistance and needs to be protected from damage of ozone and ultraviolet rays.

With the containing of acrylonitrile, the higher the acrylonitrile content, the better the resistance to petrochemical hydrocarbon fuel. However, the performance under low temperature will be poorer. The normal temperature range for product use is from -25 °C to 100 °C.

 

Used for fuel tanks, lubricant oil tanks, and to make rubber parts used in fluid media such as petroleum hydraulic oil, gasoline, water, silicone grease, silicone oil, diester lubricating oil, and glycol hydraulic oil. It is the most widely used and cost-effective rubber seal in the market.

Not sure which material best fits your application?

Contact Our Technical Team for customized recommendations.