-345 BLACK EPDM 70D NSF O-RING

This o-ring is supplied in AS568-345 black EPDM (EPR) 70 Shore A built to an inside diameter of 3.975 in (100.97 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 4.395 in (111.63 mm), catalogued under part number E70NSF345. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

EPDM (EPR) is specified here for good electrical insulating characteristics, strong performance in outdoor and exposed installations. The compound resists water and steam, ketones, and phosphate ester hydraulic fluids. Continuous operating temperature is published at -65°F (-53.9°C) to 300°F (148.9°C). Applications involving petroleum oils and fuels or mineral oil-based lubricants call for a different compound.

The compound meets FDA requirements for food contact and carries NSF listing. You will find this material specified across brake and phosphate ester systems, outdoor equipment, and potable water applications.

Stocked as E70NSF345 and sold individually. Unit weight is approximately 8.6 g and nominal inside diameter is listed as 4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. 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.