330 PTFE SOLID BACKUP RING FDA

Part number TST330SO is an AS568-330 white PTFE (Teflon) 55 Shore D Back-Up Ring supplied with an inside diameter of 2.1 in (53.34 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.52 in (64.01 mm). A back-up ring installs on the low-pressure side of an o-ring to prevent extrusion into the clearance gap at elevated pressure.

PTFE (Teflon) offers excellent dielectric properties and one of the lowest coefficients of friction of any solid. It resists nearly all industrial chemicals, solvents, and steam. Rated temperature range runs from -65°F (-53.9°C) to 500°F (260°C) in continuous service.

Typical settings include aggressive-media pipelines, pharmaceutical and biotech, and food and beverage.

Reference part number TST330SO when ordering; the item is sold individually. Nominal inside diameter is listed as 2 1/8 inch. Review your operating media and conditions against this specification before installation.