-117 WHITE PTFE 55D SINGLE TURN

TST117 is an AS568-117 white PTFE (Teflon) 55 Shore D Back-Up Ring supplied with an inside diameter of 0.799 in (20.29 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.005 in (25.53 mm). In service, this back-up ring extends o-ring service life by supporting the seal against extrusion under high pressure.

As a material, PTFE (Teflon) is valued for one of the lowest coefficients of friction of any solid and non-stick, non-contaminating surface characteristics. Expect good resistance to solvents, strong acids and bases, and nearly all industrial chemicals. Rated temperature range runs from -65°F (-53.9°C) to 500°F (260°C) in continuous service.

Maintenance and OEM teams specify it across aggressive-media pipelines, food and beverage, and semiconductor fabrication.

This item is sold individually under part number TST117. Check the compound against your process media, pressure and temperature before committing to a design. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.