Buna-N 70 Boss O-rings

Tube Size OD: 3/32"

Buna-N O-Rings 70 Duro (NBR):

The most commonly used elastomer for sealing products. Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitrile. It has a temperature range of -40F to +250F and is exceptionally resistant to petroleum-based oils and hydrocarbon fuels. Nitrile materials also exhibit excellent tensile strength and abrasion resistance properties. The material performs well with most dilute acids, silicone oils, and lubricants and in water applications. It is not recommended for use with ketones, aromatic hydrocarbons, and phosphate ester hydraulic fluids. More than 50% of the Orings sold are Nitrile O-rings, commonly used in hydraulic/pneumatic motors, cylinders, pumps, and valves.

Buna-N / Nitrile Recommended use:

• General purpose sealing.

• Petroleum oils and fluids.

• Gasoline

• Hydraulic fluids

• L.P. gases

• Cold Water.

• Silicone greases and oils

• Di-ester base lubricants (MIL-L-7808).

• Ethylene glycol base fluids (Hydrolubes)

Nitrile is not recommended for:

• Halogenated hydrocarbons (carbon tetrachloride, trichloroethylene)

• Nitro hydrocarbons (nitrobenzene, aniline)

• Phosphate ester hydraulic fluids (Skydrol, Fyrquel, Pydraul).

• Ketones (MEK, acetone)

• Ozone

• Sunlight, UV

• Weather

• Strong Acids Ozone

• Automotive brake fluid

Compound Info:

• A general purpose, sulfur-cured Nitrile (Buna-N) compound

• Color: Black

• Duro: 70

• FDA: No

• ASTM D2000-99 Grade M2BG714 B14 EA14 EF11 EF21 EO14 EO34 Z1=TR10= -31.9C

• B70 is designed to meet or exceed the properties of these popular Buna Nitrile Compounds:
  N674-70, N100-70, 7507, B46-70, 4200-70, H14327, 4700-70 and 366Y

Operating temperature: -40° to +250°F

SVKS Seal, with over 10 years experience, is one of the leading buna-n 70 boss o-rings manufacturers and suppliers in China. And we also offer the customized service catering to your special requirement. Please be free to buy the rubber products with competitive price from us.