Part number V75255 is an AS568-255 black Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 5.609 in (142.47 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 5.887 in (149.53 mm). An o-ring creates a positive seal at flange, piston and rod interfaces without added hardware.
Viton® (FKM) delivers excellent resistance to compression set and permeation, very low compression set at elevated temperature. Expect good resistance to engine and transmission fluids, chlorinated solvents, and aromatic hydrocarbons. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It should not be specified for service in amines or ketones and esters.
Maintenance and OEM teams specify it across aerospace, oil and gas, and automotive fuel systems.
V75255 ships individually. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.
Description -255 BLACK FKM 75D O-RING
Actual Cross Section 0.139 inch (3.53 mm)
Actual Inside Diameter 5.609 inch (142.47 mm)
Actual Outside Diameter 5.887 inch (149.53 mm)
Measurement System Imperial
Product Category O-Rings - Bulk - Commodity