E70NSF109 is an AS568-109 black EPDM (EPR) 70 Shore A O-Ring with an inside diameter of 0.299 in (7.59 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.505 in (12.83 mm). In service, this o-ring delivers dependable bidirectional sealing in a compact groove envelope.
EPDM (EPR) offers good electrical insulating characteristics, outstanding weather, ozone and sunlight resistance. The material holds up against water and steam, dilute acids and alkalis, and brake fluid. Continuous operating temperature is published at -65°F (-53.9°C) to 300°F (148.9°C). It should not be specified for service in aromatic hydrocarbons or petroleum oils and fuels.
The compound meets FDA requirements for food contact and carries NSF listing. You will find this material specified across solar and roofing assemblies, water and steam systems, and HVAC and refrigeration.
E70NSF109 ships individually. Unit weight is approximately 0.193 g. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description -109 BLACK EPDM 70D NSF O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 0.299 inch (7.59 mm)
Actual Outside Diameter 0.505 inch (12.83 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable