*2107-215 PTFE SPIRAL B/U FDA

This back-up ring is supplied in AS568-215 white PTFE (Teflon) 55 Shore D built to an inside diameter of 1.046 in (26.57 mm), a cross section of 0.139 in (3.53 mm), and an outside diameter of 1.324 in (33.63 mm), catalogued under part number TSP215. It bridges the extrusion gap so the primary seal holds its shape under load.

The compound resists oxidizing media, strong acids and bases, and steam. That behavior comes from the compound itself: PTFE (Teflon) is known for excellent dielectric properties and non-stick, non-contaminating surface characteristics. Published continuous service range is -65°F (-53.9°C) to 500°F (260°C). Applications involving service requiring elastic recovery or molten alkali metals call for a different compound.

Typical settings include chemical processing, laboratory equipment, and pharmaceutical and biotech.

TSP215 ships individually. Nominal inside diameter is listed as 1 1/16 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.