-474 BROWN FKM 90D O-RING

APG stocks the VB90474, an AS568-474 brown Viton® (FKM) 90 Shore A O-Ring with an inside diameter of 24.94 in (633.48 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 25.49 in (647.45 mm). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against engine and transmission fluids, aggressive chemicals, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) is widely chosen for outstanding high-temperature capability and the industry benchmark where nitrile reaches its thermal limit. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C). Exposure to low-molecular-weight organic acids or ketones and esters will shorten service life.

It sees regular use in chemical processing, oil and gas, and semiconductor equipment.

This item is sold individually under part number VB90474. Nominal inside diameter is listed as 25 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.