-158 BLACK FKM 75D O-RING

APG stocks the V70158, an AS568-158 black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 4.737 in (120.32 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 4.943 in (125.55 mm). An o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists aggressive chemicals, engine and transmission fluids, and chlorinated solvents. That behavior comes from the compound itself: Viton® (FKM) delivers outstanding high-temperature capability, excellent resistance to compression set and permeation. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C).

It sees regular use in aerospace, chemical processing, and automotive fuel systems.

Reference part number V70158 when ordering; the item is sold individually. Unit weight is approximately 3.86 g and nominal inside diameter is listed as 4 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.