This o-ring is supplied in black Viton® (FKM) 75 Shore A built to an inside diameter of 179.5 mm (7.067 in), a cross section of 3 mm (0.118 in), and an outside diameter of 185.5 mm (7.3 in), catalogued under part number V3X179.5. It compresses into its gland to block fluid or gas migration across a joint.
This material stands up to petroleum oils and fuels, chlorinated solvents, and many acids. That behavior comes from the compound itself: Viton® (FKM) is known for long service life in hot, chemically aggressive environments and outstanding high-temperature capability. Continuous operating temperature is published at -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.
It sees regular use in chemical processing, aerospace, and automotive fuel systems.
Stocked as V3X179.5 and sold individually. Review your operating media and conditions against this specification before installation.
Description 3MM CS X 179.5MM ID BLACK FKM 75D
Actual Outside Diameter 185.5 mm (7.3 inch)
Actual Cross Section 3 mm (0.118 inch)
Actual Inside Diameter 179.5 mm (7.067 inch)
Measurement System Metric
Product Category O-Rings - Metric - Commodity