Viton 75-431-Black-Pk2

APG stocks the SB-V70431-2, an AS568-431 black Viton® (FKM) 70 Shore A O-Ring measuring an inside diameter of 5.225 in (132.72 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.775 in (146.69 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces. This item is further identified as 0.275CSX5.225"IDX5.775"OD.

Viton® (FKM) is specified here for very low compression set at elevated temperature and industry benchmark where nitrile reaches its thermal limit. Expect good resistance to engine and transmission fluids, aggressive chemicals, and petroleum oils and fuels. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with hot water and steam or amines.

Maintenance and OEM teams specify it across aerospace, automotive fuel systems, and oil and gas.

This item is sold by the bag under part number SB-V70431-2. Nominal inside diameter is listed as 5 1/4 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.