This o-ring is supplied in AS568-272 black EPDM (EPR) 70 Shore A built to an inside diameter of 9.484 in (240.89 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 9.762 in (247.95 mm), catalogued under part number E70272. It creates a positive seal at flange, piston and rod interfaces without added hardware.
This material stands up to brake fluid, water and steam, and phosphate ester hydraulic fluids. That behavior comes from the compound itself: EPDM (EPR) is widely chosen for excellent hot water and steam resistance, very good flexibility at low temperature. Continuous operating temperature is published at -65°F (-53.9°C) to 300°F (148.9°C). Verify compatibility before use with petroleum oils and fuels or mineral oil-based lubricants.
Maintenance and OEM teams specify it across water and steam systems, potable water applications, and outdoor equipment.
E70272 ships individually. Unit weight is approximately 8.88 g and nominal inside diameter is listed as 9 1/2 inch. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
description -272 BLACK EPDM 70D O-RING
uf_description2 0.139" (3.53MM) CS X 9.484" (240.89MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 9.484 inch (240.89 mm)
Actual_OD 9.762 inch (247.95 mm)
ProductCode Description O-Rings - Bulk - Commodity