-908 BLACK FKM 90D O-RING

APG stocks the V90908, an AS568-908 black Viton® (FKM) 90 Shore A O-Ring measuring 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). An o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

The material holds up against many acids, chlorinated solvents, and aggressive chemicals. That behavior comes from the compound itself: Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit, excellent resistance to compression set and permeation. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). Exposure to hot water and steam or low-molecular-weight organic acids will shorten service life.

You will find this material specified across semiconductor equipment, automotive fuel systems, and oil and gas.

Order part number V90908, sold individually. Unit weight is approximately 0.4055 g. Review your operating media and conditions against this specification before installation. For a size or compound outside the standard catalog, APG can quote from a print or sample.