AS568-408 Buna-N 70 Duro Black FDA O-Ring for 2-3/8 ID X 1/4 CS

Buna-N O-Rings 70 Duro Black FDA BN700101-408

$ 1.15 per Each

Minimum Order Quantity (MOQ): 27

Ships within 10 days

Qty	Price
27 - 30	$1.1500
31 - 65	$0.8625
66 - 130	$0.6900
131 - 260	$0.5175
261+	$0.4203

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Product Details

Material	Buna-N
Temperature Range	-40°F to 250°F
Cross Sectional Shape	Round
Hardness	70
Dash	408
Fractional	ID: 2-3/8 CS: 1/4 OD: 2-7/8
Actual (Inch)	ID: 2.35 ± 0.018 CS: 0.275 ± 0.006 OD: 2.900
Actual (Metric)	ID: 59.69 ± 0.46 CS: 6.99 ± 0.15 OD: 73.670

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).