-231 WHITE BUNA 70D FDA O-RING

The H70FDA231 is an AS568-231 white Buna-N (Nitrile) 70 Shore A O-Ring with an inside diameter of 2.609 in (66.27 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.887 in (73.33 mm). This o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Buna-N (Nitrile) is specified for low compression set under sustained load and an economical choice for high-volume maintenance programs. Expect good resistance to propane and butane, many alcohols, and water. Service temperature is rated from -40°F (-40°C) through 250°F (121.1°C). Applications involving automotive brake fluid or strong acids call for a different compound.

This item meets FDA requirements for food contact under 21 CFR 177.2600. You will find this material specified across fluid power, construction equipment, and agricultural equipment.

Order part number H70FDA231, sold individually. Unit weight is approximately 2.8 g and nominal inside diameter is listed as 2 5/8 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.