AS568-401 Buna-N 70 Duro Black FDA O-Ring for 1-1/2 ID X 1/4 CS

Buna-N O-Rings 70 Duro Black FDA BN700101-401

$ 0.7744 per Each

Minimum Order Quantity (MOQ): 39

Ships within 10 days

Qty	Price
39 - 45	$0.7744
46 - 96	$0.5808
97 - 193	$0.4646
194 - 387	$0.3485
388 - 774	$0.2710
775+	$0.2614

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	70
Dash	401
Fractional	ID: 1-1/2 CS: 1/4 OD: 2
Actual (Inch)	ID: 1.475 ± 0.015 CS: 0.275 ± 0.006 OD: 2.025
Actual (Metric)	ID: 37.47 ± 0.38 CS: 6.99 ± 0.15 OD: 51.450

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).