3MM CS X 139MM ID BLACK FKM 75D

Part number V3X139 is a black Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 139 mm (5.472 in), a cross section of 3 mm (0.118 in), and an outside diameter of 145 mm (5.71 in). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

As a material, Viton® (FKM) is specified for outstanding high-temperature capability and long service life in hot, chemically aggressive environments. The material holds up against aggressive chemicals, aromatic hydrocarbons, and petroleum oils and fuels. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. It should not be specified for service in low-molecular-weight organic acids or hot water and steam.

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

Stocked as V3X139 and sold individually. Unit weight is approximately 5.7319 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.