*PTFE S/T SPLIT BACK UPS -035 FDA

The TST035 is an AS568-035 white PTFE (Teflon) 55 Shore D Back-Up Ring built to an inside diameter of 2.239 in (56.87 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 2.379 in (60.43 mm). This 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 one of the lowest coefficients of friction of any solid. This material stands up to nearly all industrial chemicals, strong acids and bases, and solvents. Published continuous service range is -65°F (-53.9°C) to 500°F (260°C). Applications involving elemental fluorine at temperature or molten alkali metals call for a different compound.

Common environments for this compound include pharmaceutical and biotech, aggressive-media pipelines, and laboratory equipment.

Stocked as TST035 and sold individually. Nominal inside diameter is listed as 2 1/4 inch. As always, verify media compatibility and operating conditions against the requirements of your specific application.