8-116 BLACK FKM 90D BACK-UP RING

This back-up ring is supplied in AS568-116 black Viton® (FKM) 90 Shore A with an inside diameter of 0.737 in (18.72 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.943 in (23.95 mm), catalogued under part number VBU90116. It extends o-ring service life by supporting the seal against extrusion under high pressure.

As a material, Viton® (FKM) is known for the industry benchmark where nitrile reaches its thermal limit, excellent resistance to compression set and permeation. The compound resists chlorinated solvents, many acids, and petroleum oils and fuels. Rated temperature range runs from -15°F (-26.1°C) to 400°F (204.4°C) in continuous service.

Typical settings include high-temperature process equipment, chemical processing, and aerospace.

Reference part number VBU90116 when ordering; the item is sold individually. Unit weight is approximately 0.5966 g. Check the compound against your process media, pressure and temperature before committing to a design. APG can cross-reference from an existing part number, a drawing or a physical sample if this size is not an exact match.