The TST132SO is an AS568-132 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 1.737 in (44.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.943 in (49.35 mm). This back-up ring allows a standard o-ring to operate at higher pressures than it could unsupported.
As a material, PTFE (Teflon) is specified for excellent dielectric properties and a very wide continuous service temperature range. This material stands up to steam, oxidizing media, and strong acids and bases. Service temperature is rated from -65°F (-53.9°C) through 500°F (260°C). It should not be specified for service in service requiring elastic recovery or molten alkali metals.
It sees regular use in aggressive-media pipelines, pharmaceutical and biotech, and semiconductor fabrication.
Stocked as TST132SO and sold individually. Nominal inside diameter is listed as 1 3/4 inch. Confirm chemical compatibility, pressure and temperature against your own application requirements before installing. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description 132 PTFE SOLID BACKUP RING FDA
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 1.737 inch (44.12 mm)
Actual Outside Diameter 1.943 inch (49.35 mm)
Measurement System Imperial
Product Category O-Rings - Backup Rings