-427 BLUE FKM 75D O-RING

This o-ring is supplied in AS568-427 blue Viton® (FKM) 75 Shore A with an inside diameter of 4.725 in (120.02 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 5.275 in (133.99 mm), catalogued under part number V75MD427. It creates a positive seal at flange, piston and rod interfaces without added hardware.

Viton® (FKM) is specified here for industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. The compound resists aggressive chemicals, aromatic hydrocarbons, and many acids. 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 ketones and esters or low-molecular-weight organic acids.

The compound meets FDA requirements for food contact, carries NSF listing, and is metal detectable for HACCP and foreign-body control programs. You will find this material specified across high-temperature process equipment, automotive fuel systems, and aerospace.

Order part number V75MD427, sold individually. Nominal inside diameter is listed as 4 3/4 inch. 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.