-385 BROWN FKM 90D O-RING

APG stocks the VB90385, an AS568-385 brown Viton® (FKM) 90 Shore A O-Ring measuring an inside diameter of 15.955 in (405.26 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 16.375 in (415.93 mm). An o-ring delivers dependable bidirectional sealing in a compact groove envelope.

The material holds up against engine and transmission fluids, chlorinated solvents, and aromatic hydrocarbons. That behavior comes from the compound itself: Viton® (FKM) is valued for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service. Verify compatibility before use with hot water and steam or ketones and esters.

Typical settings include high-temperature process equipment, chemical processing, and automotive fuel systems.

Reference part number VB90385 when ordering; the item is sold individually. Nominal inside diameter is listed as 16 inch. Check the compound against your process media, pressure and temperature before committing to a design. If you need a size, durometer or compound that is not listed, APG can cross-reference from a print, a sample or a competitor part number.