Ordered as VITON75231, this is an AS568-231 black Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 2.609 in (66.27 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 2.887 in (73.33 mm). The o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Viton® (FKM) is specified here for long service life in hot, chemically aggressive environments, excellent resistance to compression set and permeation. The compound resists aromatic hydrocarbons, chlorinated solvents, and petroleum oils and fuels. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in low-molecular-weight organic acids or amines.
You will find this material specified across automotive fuel systems, high-temperature process equipment, and semiconductor equipment.
This item is sold individually under part number VITON75231. Unit weight is approximately 3.82 g and nominal inside diameter is listed as 2 5/8 inch. Review your operating media and conditions against this specification before installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
description -231 BLACK CHEMOURS VITON 75D O-RING
uf_description2 0.139" (3.53MM) CS X 2.609" (66.27MM) ID
Actual_CS 0.139 inch (3.53 mm)
Actual_ID 2.609 inch (66.27 mm)
Actual_OD 2.887 inch (73.33 mm)
ProductCode Description O-Rings - Bulk - Commodity