377 PTFE SOLID BACKUP RING FDA

Part number TST377SO is an AS568-377 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 9.975 in (253.37 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 10.395 in (264.03 mm). A back-up ring bridges the extrusion gap so the primary seal holds its shape under load.

PTFE (Teflon) is specified here for non-stick, non-contaminating surface characteristics and excellent dielectric properties. The compound resists solvents, nearly all industrial chemicals, and strong acids and bases. Continuous operating temperature is published at -65°F (-53.9°C) to 500°F (260°C). Verify compatibility before use with elemental fluorine at temperature or molten alkali metals.

Common environments for this compound include chemical processing, laboratory equipment, and food and beverage.

Stocked as TST377SO and sold individually. Nominal inside diameter is listed as 10 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.