-241 WHITE BUNA 70D FDA O-RING

This o-ring is supplied in AS568-241 white Buna-N (Nitrile) 70 Shore A supplied with an inside diameter of 3.859 in (98.02 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.137 in (105.08 mm), catalogued under part number H70FDA241. It creates a positive seal at flange, piston and rod interfaces without added hardware.

The compound resists water, hydraulic fluids, and many alcohols. That behavior comes from the compound itself: Buna-N (Nitrile) is known for low compression set under sustained load and an economical choice for high-volume maintenance programs. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Exposure to polar solvents or ketones will shorten service life.

This o-ring meets FDA requirements for food contact under 21 CFR 177.2600. You will find this material specified across general industrial maintenance, automotive, and hydraulic and pneumatic systems.

Stocked as H70FDA241 and sold individually. Unit weight is approximately 0.009 lb and nominal inside diameter is listed as 3 7/8 inch. Check the compound against your process media, pressure and temperature before committing to a design.