-340 BLACK EPDM 70D NSF O-RING

E70NSF340 is an AS568-340 black EPDM (EPR) 70 Shore A O-Ring built to an inside diameter of 3.35 in (85.09 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.77 in (95.76 mm). In service, this o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

As a material, EPDM (EPR) is specified for very good flexibility at low temperature, strong performance in outdoor and exposed installations. Expect good resistance to dilute acids and alkalis, ketones, and ozone, UV and weathering. Rated temperature range runs from -65°F (-53.9°C) to 300°F (148.9°C) in continuous service. Exposure to aromatic hydrocarbons or petroleum oils and fuels will shorten service life.

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

Stocked as E70NSF340 and sold individually. Unit weight is approximately 7.294 g. Check the compound against your process media, pressure and temperature before committing to a design. 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.