-444 BROWN FKM 75D O-RING

APG stocks the VB75444, an AS568-444 brown Viton® (FKM) 75 Shore A O-Ring built to an inside diameter of 7.725 in (196.22 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 8.275 in (210.19 mm). An o-ring compresses into its gland to block fluid or gas migration across a joint.

As a material, Viton® (FKM) is valued for the industry benchmark where nitrile reaches its thermal limit and outstanding high-temperature capability. The material holds up against aromatic hydrocarbons, aggressive chemicals, and chlorinated solvents. 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 hot water and steam or ketones and esters.

Maintenance and OEM teams specify it across oil and gas, automotive fuel systems, and chemical processing.

Stocked as VB75444 and sold individually. Unit weight is approximately 50.3 g and nominal inside diameter is listed as 7 3/4 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.