-240 WHITE BUNA 70D FDA O-RING

Part number H70FDA240 is an AS568-240 white Buna-N (Nitrile) 70 Shore A O-Ring supplied with an inside diameter of 3.734 in (94.84 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.012 in (101.9 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists many alcohols, greases and lubricants, and water. That behavior comes from the compound itself: Buna-N (Nitrile) offers the most widely specified general-purpose sealing elastomer and low compression set under sustained load. Continuous operating temperature is published at -40°F (-40°C) to 250°F (121.1°C). Verify compatibility before use with automotive brake fluid or ketones.

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

This item is sold individually under part number H70FDA240. Unit weight is approximately 3.93 g and nominal inside diameter is listed as 3 3/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.