-283 BLACK EPDM 70D NSF O-RING

This o-ring is supplied in AS568-283 black EPDM (EPR) 70 Shore A measuring an inside diameter of 16.955 in (430.66 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 17.233 in (437.72 mm), catalogued under part number E70NSF283. It compresses into its gland to block fluid or gas migration across a joint.

The compound resists ketones, brake fluid, and dilute acids and alkalis. That behavior comes from the compound itself: EPDM (EPR) is valued for good electrical insulating characteristics, outstanding weather, ozone and sunlight resistance. Service temperature is rated from -65°F (-53.9°C) through 300°F (148.9°C). It is not the right choice where aromatic hydrocarbons or petroleum oils and fuels are present.

The compound meets FDA requirements for food contact and carries NSF listing. Maintenance and OEM teams specify it across water and steam systems, solar and roofing assemblies, and outdoor equipment.

Order part number E70NSF283, sold individually. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.