010 PTFE SOLID BACKUP RING FDA

APG stocks the TST010SO, an AS568-010 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 0.239 in (6.07 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 0.379 in (9.63 mm). A back-up ring allows a standard o-ring to operate at higher pressures than it could unsupported.

PTFE (Teflon) is specified here for one of the lowest coefficients of friction of any solid and near-universal chemical inertness. It resists oxidizing media, nearly all industrial chemicals, and solvents. Published continuous service range is -65°F (-53.9°C) to 500°F (260°C). Verify compatibility before use with molten alkali metals or service requiring elastic recovery.

Maintenance and OEM teams specify it across semiconductor fabrication, food and beverage, and pharmaceutical and biotech.

TST010SO ships individually. Nominal inside diameter is listed as 1/4 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.