2103-010 PTFE S/T BUP FDA

APG stocks the TST010, an AS568-010 white PTFE (Teflon) 55 Shore D Back-Up Ring supplied 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 excellent dielectric properties and one of the lowest coefficients of friction of any solid. Expect good resistance to nearly all industrial chemicals, solvents, and strong acids and bases. Continuous operating temperature is published at -65°F (-53.9°C) to 500°F (260°C).

Maintenance and OEM teams specify it across food and beverage, pharmaceutical and biotech, and aggressive-media pipelines.

TST010 ships individually. Nominal inside diameter is listed as 1/4 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.