AS568-349 B70 (NBR) Buna-N Nitrile 70 Duro O-Ring



$1.680

Qty Discounts Prices
6-29
$1.680
30-1,499
$0.369
1,500-14,999
$0.258
15,000+
$0.206
  • Model: B70349
    Dimensions: 4-1/2"ID X 4-7/8"OD X 3/16"CS
    Actual: 4.475"ID X 0.210"CS
    Metric: 113.67mm ID X 5.33mm CS
  • PDF Data Sheet
  • 12 in Stock
Add to Cart:
Min Qty:  6

4-1/2"ID X 4-7/8"OD X 3/16"CS

Buna-N O-Rings 70 Duro:

Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and is exceptionally resistant to petroleum base 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 Orings, commonly used in hydraulic/pneumatic motors, cylinders, pumps and valves.

Recommended uses fo Buna-N O-rings:

  • 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)

Buna-N O-rings are 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

Operating temperature: -40° to +250F°

For more information, please visit this product's webpage.

Copyright © 2024 The O-Ring Store, LLC
1847 Wilma Dr, Clarkston WA 99403
Phone 208-413-6377 - Fax 208-413-6719