626-332 U-cup Seal Buna-N 70



$4.040

Qty Discounts Prices
1-9
$4.040
10-99
$3.240
100+
$2.830
  • Model: 626-332-5747
  • 160 in Stock
Add to Cart:
U-Cup Size: 2-3/8"ID X 2-5/8"OD X 3/16"CS

 

Description - Nitrile Rubber - NBR - Buna-N

On a cost basis, Buna-N, nitrile, or NBR, rubber is the least expensive of the oil resistant elastomers. As a result, nitrile is one of the most widely used rubber materials due to its combination of low cost, resistance to many chemicals, and good physical properties. The acrylonitrile content of this highly polar elastomer provides excellent oil and gas permeation resistance which increases as the level of ACN increases. Nitrile should not be exposed to direct sunlight or moderate to high levels of atmospheric ozone, as rapid deterioration will result. However, NBR will accept many antidegradants, most notably PVC, which offer some degree of improvement of these properties. Nitriles are usually sulfur cured, but peroxide curing is also possible, resulting in improved compression set.

Composition

Nitrile Rubber

Physical Properties*

 
Excellent
Good
Fair
Poor
Abrasion resistance
Compression Set
Elongation
Flame resistance
Gas permeability
Low temperature flexibility
Tear resistance
Tensile strength

Chemical Resistance*

 
Excellent
Good
Fair
Poor
Brake fluid
Dilute acids
Dilute alkalis
Hydraulic fluids
Ketones
Ozone
Petroleum oils
Silicone Fluids
Steam
Strong acids
Transmission fluids
Water
Weather

Operating Temperature

-40 to 212°F
*Excellent, good, fair and poor are intended to serve as general guidelines only. Actual testing in the application environment is always recommended.

The O-ring Store is a distributor of O-rings, Seals, Seal Kits, Hydraulic Seals, and Pneumatic seals for many applications. We provide seal products to a variety of industries and customers such as: Automotive, Pool, Spa, Pump, Restaurant, Washer, Hydraulic, Coatings, construction equipment, material handling, industrial plant applications, farming, and logging equipment. We do not imply that these kits are original replacement parts.

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