110 PTFE SOLID BACKUP RING FDA

The TST110SO is an AS568-110 white PTFE (Teflon) 55 Shore D Back-Up Ring supplied with an inside diameter of 0.362 in (9.19 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.568 in (14.43 mm). This back-up ring extends o-ring service life by supporting the seal against extrusion under high pressure.

PTFE (Teflon) is specified here for non-stick, non-contaminating surface characteristics and excellent dielectric properties. The material holds up against solvents, steam, and oxidizing media. 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.

Maintenance and OEM teams specify it across laboratory equipment, pharmaceutical and biotech, and semiconductor fabrication.

Reference part number TST110SO when ordering; the item is sold individually. Nominal inside diameter is listed as 3/8 inch. 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.