AS568-175 Buna-N 70 Duro Black O-Ring for 9 ID X 3/32 CS

Buna-N O-Rings 70 Duro Black BN700100-175

$ 1.26 per Each

Minimum Order Quantity (MOQ): 24

Ships within 7 days

Qty	Price
24 - 27	$1.2600
28 - 59	$0.9450
60 - 119	$0.7560
120 - 238	$0.5670
239+	$0.5124

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Product Details

Material	Buna-N
Temperature Range	-40°F to 250°F
Cross Sectional Shape	Round
Hardness	70
Dash	175
Fractional	ID: 9 CS: 3/32 OD: 9-3/16
Actual (Inch)	ID: 8.987 ± 0.050 CS: 0.103 ± 0.003 OD: 9.193
Actual (Metric)	ID: 228.27 ± 1.27 CS: 2.62 ± 0.08 OD: 233.510

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.