*2107-333 PTFE SPIRAL B/U FDA

APG stocks the TSP333, an AS568-333 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 2.475 in (62.87 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.895 in (73.53 mm). A back-up ring extends o-ring service life by supporting the seal against extrusion under high pressure.

PTFE (Teflon) is known for excellent dielectric properties and non-stick, non-contaminating surface characteristics. The material holds up against steam, oxidizing media, and nearly all industrial chemicals. Rated temperature range runs from -65°F (-53.9°C) to 500°F (260°C) in continuous service.

Typical settings include chemical processing, laboratory equipment, and semiconductor fabrication.

Reference part number TSP333 when ordering; the item is sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application. For a size or compound outside the standard catalog, APG can quote from a print or sample.