AS568-924 Buna-N 90 Duro Black O-Ring for ID X CS

Buna-N O-Rings 90 Duro Black BN900100-924

$ 0.259 per Each

Minimum Order Quantity (MOQ): 116

Ships within 14 days

Qty	Price
116 - 135	$0.2590
136 - 289	$0.1943
290 - 579	$0.1554
580 - 1158	$0.1165
1159 - 2316	$0.0906
2317+	$0.0777

Ordering in large quantities? Ask for a lead time quote — we'll get back to you with pricing and lead time.

Product Details

Material	Buna-N
Temperature Range	-40°F to 250°F
Cross Sectional Shape	Round
Hardness	90
Dash	924
Actual (Inch)	ID: 1.720 ± 0.014 CS: 0.116 ± 0.004 OD: 1.952
Actual (Metric)	ID: 43.69 ± 0.36 CS: 3.00 ± 0.10 OD: 49.690

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.