TSP350 is an AS568-350 white PTFE (Teflon) 55 Shore D Back-Up Ring built to an inside diameter of 4.6 in (116.84 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 5.02 in (127.51 mm). In service, this back-up ring bridges the extrusion gap so the primary seal holds its shape under load.
The material holds up against oxidizing media, solvents, and strong acids and bases. PTFE (Teflon) is known for one of the lowest coefficients of friction of any solid and excellent dielectric properties. 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.
It sees regular use in food and beverage, semiconductor fabrication, and pharmaceutical and biotech.
This item is sold individually under part number TSP350. Check the compound against your process media, pressure and temperature before committing to a design.
Description **2107-350 PTFE SPIRAL B/U FDA
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 4.6 inch (116.84 mm)
Actual Outside Diameter 5.02 inch (127.51 mm)
Measurement System Imperial
Product Category O-Rings - Backup Rings