4MM CS X 38MM ID BLACK FKM 75D

APG stocks the V4X38, a black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 38 mm (1.496 in), a cross section of 4 mm (0.157 in), and an outside diameter of 46 mm (1.81 in). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Viton® (FKM) delivers outstanding high-temperature capability and the industry benchmark where nitrile reaches its thermal limit. Expect good resistance to engine and transmission fluids, chlorinated solvents, and aggressive chemicals. The material carries a published service range of -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.

Maintenance and OEM teams specify it across aerospace, automotive fuel systems, and high-temperature process equipment.

Stocked as V4X38 and sold individually. Unit weight is approximately 0.0032 g. Review your operating media and conditions against this specification before installation. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.