-437 BROWN FKM 90D O-RING

VB90437 is an AS568-437 brown Viton® (FKM) 90 Shore A O-Ring measuring an inside diameter of 5.975 in (151.77 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.525 in (165.74 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The compound resists engine and transmission fluids, chlorinated solvents, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) offers outstanding high-temperature capability and long service life in hot, chemically aggressive environments. 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, high-temperature process equipment, and automotive fuel systems.

Reference part number VB90437 when ordering; the item is sold individually. Unit weight is approximately 42.836 g and nominal inside diameter is listed as 6 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.