-908 BROWN FKM 90D O-RING

This o-ring is supplied in AS568-908 brown Viton® (FKM) 90 Shore A supplied with an inside diameter of 0.644 in (16.36 mm), a cross section of 0.087 in (2.21 mm), and an outside diameter of 0.818 in (20.78 mm), catalogued under part number VB90908. It compresses into its gland to block fluid or gas migration across a joint.

This material stands up to aggressive chemicals, chlorinated solvents, and many acids. That behavior comes from the compound itself: Viton® (FKM) delivers long service life in hot, chemically aggressive environments, excellent resistance to compression set and permeation. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It is not the right choice where ketones and esters or amines are present.

Maintenance and OEM teams specify it across high-temperature process equipment, semiconductor equipment, and chemical processing.

Reference part number VB90908 when ordering; the item is sold individually. Unit weight is approximately 0.4994 g. Review your operating media and conditions against this specification before installation. 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.