APG stocks the E80PC333, an AS568-333 black EPDM (EPR) 80 Shore A O-Ring supplied with an inside diameter of 2.475 in (62.87 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.895 in (73.53 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.
EPDM (EPR) is specified here for excellent hot water and steam resistance, very good flexibility at low temperature. Expect good resistance to ketones, ozone, UV and weathering, and water and steam. Published continuous service range is -65°F (-53.9°C) to 300°F (148.9°C). Applications involving aromatic hydrocarbons or petroleum oils and fuels call for a different compound.
You will find this material specified across outdoor equipment, water and steam systems, and HVAC and refrigeration.
Stocked as E80PC333 and sold individually. Nominal inside diameter is listed as 2 1/2 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.
description -333 BLACK EPDM 80D O-RING
uf_description2 PEROXIDE CURED, 0.210" (5.33MM) CS X 2.475" (62.87MM) ID
Actual_CS 0.21 inch (5.33 mm)
Actual_ID 2.475 inch (62.87 mm)
Actual_OD 2.895 inch (73.53 mm)
ProductCode Description O-Rings - Bulk - Commodity