-428 BROWN FKM 75D O-RING

This o-ring is supplied in AS568-428 brown Viton® (FKM) 75 Shore A supplied with an inside diameter of 4.85 in (123.19 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.4 in (137.16 mm), catalogued under part number VB75428. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit, excellent resistance to compression set and permeation. The material holds up against aggressive chemicals, aromatic hydrocarbons, and engine and transmission fluids. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Exposure to low-molecular-weight organic acids or hot water and steam will shorten service life.

Maintenance and OEM teams specify it across high-temperature process equipment, aerospace, and oil and gas.

Order part number VB75428, sold individually. Unit weight is approximately 31.848 g. Check the compound against your process media, pressure and temperature before committing to a design.