AS568-234 Buna-N 70 Duro Black FDA O-Ring for 3 ID X 1/8 CS

Buna-N O-Rings 70 Duro Black FDA BN700101-234

$ 0.459 per Each

Minimum Order Quantity (MOQ): 66

Ships within 10 days

Qty	Price
66 - 76	$0.4590
77 - 163	$0.3443
164 - 326	$0.2754
327 - 653	$0.2065
654+	$0.1688

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Product Details

Material	Buna-N
Temperature Range	-40°F to 250°F
Cross Sectional Shape	Round
Hardness	70
Dash	234
Fractional	ID: 3 CS: 1/8 OD: 3-1/4
Actual (Inch)	ID: 2.984 ± 0.024 CS: 0.139 ± 0.004 OD: 3.262
Actual (Metric)	ID: 75.79 ± 0.61 CS: 3.53 ± 0.10 OD: 82.850

FDA-approved Buna-N (Nitrile) O-rings are made from a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene, specially formulated to meet the Food and Drug Administration (FDA) requirements for food contact applications. These O-rings offer excellent resistance to oils, fuels, and many chemicals while being compliant with FDA regulations for safe use in food processing, pharmaceutical, and medical industries. FDA Buna-N O-rings provide high mechanical strength, outstanding wear resistance, and good tensile strength, making them ideal for sanitary applications.

FDA Buna-N Recommended Uses

Seals and gaskets for food and beverage processing, pharmaceutical applications, medical devices, sanitary sealing applications, food handling equipment, and laboratory applications.

FDA Buna-N Not Recommended

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

FDA Buna-N Limitations

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

FDA Buna-N Usable Temperature Range

-30 to 250°F (-34 to 121°C)

FDA Buna-N Also Known As

FDA Buna-N, Nitrile, NBR, Nitrile Butadiene Rubber (FDA Compliant).