-389 BLACK FKM 75D O-RING

V70389 is an AS568-389 black Viton® (FKM) 75 Shore A O-Ring measuring an inside diameter of 19.953 in (506.81 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 20.373 in (517.47 mm). In service, this o-ring provides a reliable static or dynamic seal by deforming into its gland under assembly load.

As a material, Viton® (FKM) delivers the industry benchmark where nitrile reaches its thermal limit and very low compression set at elevated temperature. This material stands up to aggressive chemicals, petroleum oils and fuels, and many acids. The material carries a published service range of -15°F (-26.1°C) to 400°F (204.4°C).

Common environments for this compound include aerospace, automotive fuel systems, and semiconductor equipment.

Order part number V70389, sold individually. Unit weight is approximately 64.7 g and nominal inside diameter is listed as 20 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application. 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.