APG stocks the E70NSF320, an AS568-320 black EPDM (EPR) 70 Shore A O-Ring supplied with an inside diameter of 1.1 in (27.94 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 1.52 in (38.61 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.
It resists ozone, UV and weathering, ketones, and brake fluid. That behavior comes from the compound itself: EPDM (EPR) is known for outstanding weather, ozone and sunlight resistance, excellent hot water and steam resistance. The material carries a published service range of -65°F (-53.9°C) to 300°F (148.9°C).
This o-ring meets FDA requirements for food contact and carries NSF listing. It sees regular use in water and steam systems, potable water applications, and brake and phosphate ester systems.
E70NSF320 ships individually. Unit weight is approximately 2.767 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.
Description -320 BLACK EPDM 70D NSF O-RING
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 1.1 inch (27.94 mm)
Actual Outside Diameter 1.52 inch (38.61 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable