This o-ring is supplied in AS568-131 black EPDM (EPR) 70 Shore A built to an inside diameter of 1.674 in (42.52 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.88 in (47.75 mm), catalogued under part number E70NSF131. It provides a reliable static or dynamic seal by deforming into its gland under assembly load.
The material holds up against ketones, brake fluid, and water and steam. That behavior comes from the compound itself: EPDM (EPR) is valued for excellent hot water and steam resistance, outstanding weather, ozone and sunlight resistance. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). It is not the right choice where petroleum oils and fuels or aromatic hydrocarbons are present.
The compound meets FDA requirements for food contact and carries NSF listing. Typical settings include solar and roofing assemblies, water and steam systems, and potable water applications.
Order part number E70NSF131, sold individually. Unit weight is approximately 0.85 g and nominal inside diameter is listed as 1 11/16 inch. Review your operating media and conditions against this specification before installation.
Description -131 BLACK EPDM 70D NSF O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 1.674 inch (42.52 mm)
Actual Outside Diameter 1.88 inch (47.75 mm)
Measurement System Imperial
Product Category O-Rings - FDA / Metal Detectable