465 PTFE SOLID BACKUP RING FDA

Ordered as TST465SO, this is an AS568-465 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 17.955 in (456.06 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 18.505 in (470.03 mm). The back-up ring bridges the extrusion gap so the primary seal holds its shape under load.

As a material, PTFE (Teflon) is widely chosen for excellent dielectric properties and one of the lowest coefficients of friction of any solid. The material holds up against oxidizing media, nearly all industrial chemicals, and steam. Service temperature is rated from -65°F (-53.9°C) through 500°F (260°C).

Typical settings include chemical processing, aggressive-media pipelines, and food and beverage.

This item is sold individually under part number TST465SO. Nominal inside diameter is listed as 18 inch. Check the compound against your process media, pressure and temperature before committing to a design. APG supports cross-referencing from drawings, samples and competitor numbers when a listed size is not an exact fit.