-391 BLACK CHEMOURS VITON 75D O-RING

This o-ring is supplied in AS568-391 black Viton® (FKM) 75 Shore A measuring an inside diameter of 21.953 in (557.61 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 22.373 in (568.27 mm), catalogued under part number VITON75391. It delivers dependable bidirectional sealing in a compact groove envelope.

Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. This material stands up to aromatic hydrocarbons, petroleum oils and fuels, and many acids. Published continuous service range is -15°F (-26.1°C) to 400°F (204.4°C). It is not the right choice where low-molecular-weight organic acids or amines are present.

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

Reference part number VITON75391 when ordering; the item is sold individually. Unit weight is approximately 71.883 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.