AS568-041 Buna-N 70 Duro Black FDA O-Ring for 3 ID X 1/16 CS

Buna-N O-Rings 70 Duro Black FDA BN700101-041

$ 0.378 per Each

Minimum Order Quantity (MOQ): 80

Ships within 10 days

Qty	Price
80 - 92	$0.3780
93 - 198	$0.2835
199 - 396	$0.2268
397 - 793	$0.1701
794 - 1587	$0.1323
1588+	$0.1134

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	041
Fractional	ID: 3 CS: 1/16 OD: 3-1/8
Actual (Inch)	ID: 2.989 ± 0.024 CS: 0.070 ± 0.003 OD: 3.129
Actual (Metric)	ID: 75.92 ± 0.61 CS: 1.78 ± 0.08 OD: 79.480

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).