4MM CS X 51MM ID BLACK FKM 75D

This o-ring is supplied in black Viton® (FKM) 75 Shore A built to an inside diameter of 51 mm (2.008 in), a cross section of 4 mm (0.157 in), and an outside diameter of 59 mm (2.32 in), catalogued under part number V4X51. It seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

It resists chlorinated solvents, engine and transmission fluids, and petroleum oils and fuels. That behavior comes from the compound itself: Viton® (FKM) is specified for excellent resistance to compression set and permeation, long service life in hot, chemically aggressive environments. Continuous operating temperature is published at -15°F (-26.1°C) to 400°F (204.4°C). It is not the right choice where amines or low-molecular-weight organic acids are present.

Typical settings include high-temperature process equipment, automotive fuel systems, and semiconductor equipment.

Order part number V4X51, sold individually. Unit weight is approximately 4.0263 g. Application requirements vary, so validate compatibility with your process conditions prior to installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.