AS568-916 Buna-N 70 Duro Black O-Ring for ID X CS

Buna-N O-Rings 70 Duro Black BN700100-916

$ 0.1386 per Each

Minimum Order Quantity (MOQ): 217

Ships within 7 days

Qty	Price
217 - 252	$0.1386
253 - 541	$0.1040
542 - 1082	$0.0832
1083 - 2164	$0.0624
2165 - 4328	$0.0485
4330+	$0.0416

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Product Details

Material	Buna-N
Temperature Range	-40°F to 250°F
Cross Sectional Shape	Round
Hardness	70
Dash	916
Actual (Inch)	ID: 1.171 ± 0.010 CS: 0.116 ± 0.004 OD: 1.403
Actual (Metric)	ID: 29.74 ± 0.26 CS: 2.95 ± 0.10 OD: 35.640

Buna-N (Nitrile) O-rings are made from a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene. They are among the most widely used sealing materials due to their excellent resistance to oils, fuels, and many chemicals. Nitrile O-rings provide high mechanical strength, outstanding wear resistance, and good tensile strength, making them ideal for automotive, industrial, and aerospace applications.

Buna-N Recommended Uses

Seals and gaskets, fuel systems, hydraulic systems, oil and gas industry, automotive applications, general-purpose applications.

Buna-N Not Recommended

Brake fluid, ozone, UV exposure, phosphate esters, chlorinated hydrocarbons, aromatic hydrocarbons, ketones, strong acids, atmospheric aging.

Buna-N Limitations

Not suitable for ozone, sunlight, or weathering exposure.
Limited performance in high-temperature environmen.
Not ideal for strong acids and alkalis.
Not recommended for applications requiring low compression set.

Buna-N Usable Temperature Range

-30 to 250°F (-34 to 121°C)

Buna-N Also Known As

Buna-N, Nitrile, NBR, Nitrile Butadiene Rubber.