The E70243 is an AS568-243 black EPDM (EPR) 70 Shore A O-Ring measuring an inside diameter of 4.109 in (104.37 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 4.387 in (111.43 mm). This o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.
EPDM (EPR) offers outstanding weather, ozone and sunlight resistance, very good flexibility at low temperature. The material holds up against ketones, water and steam, and phosphate ester hydraulic fluids. 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.
Typical settings include water and steam systems, outdoor equipment, and HVAC and refrigeration.
Stocked as E70243 and sold individually. Unit weight is approximately 3.95 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -243 BLACK EPDM 70D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 4.109 inch (104.37 mm)
Actual Outside Diameter 4.387 inch (111.43 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity