-221 WHITE BUNA 70D FDA O-RING

The H70FDA221 is an AS568-221 white Buna-N (Nitrile) 70 Shore A O-Ring measuring an inside diameter of 1.421 in (36.09 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.699 in (43.15 mm). This o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.

Buna-N (Nitrile) is specified here for reliable performance in both static and dynamic service, low compression set under sustained load. Expect good resistance to many alcohols, hydraulic fluids, and water. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). It is not the right choice where automotive brake fluid or strong acids are present.

This item meets FDA requirements for food contact under 21 CFR 177.2600. It sees regular use in hydraulic and pneumatic systems, general industrial maintenance, and automotive.

This item is sold individually under part number H70FDA221. Unit weight is approximately 1.6344 g and nominal inside diameter is listed as 1 7/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.