-388 BLACK EPDM 70D O-RING

Part number E70388 is an AS568-388 black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 18.953 in (481.41 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 19.373 in (492.07 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

EPDM (EPR) is specified here for strong performance in outdoor and exposed installations, very good flexibility at low temperature. The compound resists ketones, brake fluid, and ozone, UV and weathering. Service temperature is rated from -65°F (-53.9°C) through 300°F (148.9°C). Verify compatibility before use with petroleum oils and fuels or mineral oil-based lubricants.

Common environments for this compound include solar and roofing assemblies, brake and phosphate ester systems, and HVAC and refrigeration.

E70388 ships individually. Unit weight is approximately 0.0376 g and nominal inside diameter is listed as 19 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.