This o-ring is supplied in AS568-158 black Viton® (FKM) 75 Shore A supplied 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), catalogued under part number VITON75158. It creates a positive seal at flange, piston and rod interfaces without added hardware.
The compound resists engine and transmission fluids, petroleum oils and fuels, and chlorinated solvents. Viton® (FKM) is specified for excellent resistance to compression set and permeation, outstanding high-temperature capability. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Verify compatibility before use with hot water and steam or amines.
Maintenance and OEM teams specify it across oil and gas, aerospace, and high-temperature process equipment.
Reference part number VITON75158 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. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. For a size or compound outside the standard catalog, APG can quote from a print or sample.
Description -158 BLACK CHEMOURS VITON 75D O-RING
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 4.737 inch (120.32 mm)
Actual Outside Diameter 4.943 inch (125.55 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity