-238 BROWN FKM 75D O-RING

The VB75238 is an AS568-238 brown Viton® (FKM) 75 Shore A O-Ring with an inside diameter of 3.484 in (88.49 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 3.762 in (95.55 mm). This o-ring seats in a machined groove and forms a leak-tight barrier when compressed between two mating surfaces.

This material stands up to aromatic hydrocarbons, aggressive chemicals, and engine and transmission fluids. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. Service temperature is rated from -15°F (-26.1°C) through 400°F (204.4°C). Exposure to ketones and esters or low-molecular-weight organic acids will shorten service life.

It sees regular use in high-temperature process equipment, oil and gas, and chemical processing.

Stocked as VB75238 and sold individually. Unit weight is approximately 6.06 g and nominal inside diameter is listed as 3 1/2 inch. Check the compound against your process media, pressure and temperature before committing to a design. For a size or compound outside the standard catalog, APG can quote from a print or sample.