The TST024SO is an AS568-024 white PTFE (Teflon) 55 Shore D Back-Up Ring supplied with an inside diameter of 1.114 in (28.3 mm), a cross section of 0.07 in (1.78 mm), and an outside diameter of 1.254 in (31.85 mm). This 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) is specified here for excellent dielectric properties and one of the lowest coefficients of friction of any solid. The material holds up against strong acids and bases, steam, and solvents. The material carries a published service range of -65°F (-53.9°C) to 500°F (260°C).
You will find this material specified across pharmaceutical and biotech, aggressive-media pipelines, and chemical processing.
Order part number TST024SO, sold individually. Nominal inside diameter is listed as 1 1/8 inch. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description **024 PTFE SOLID BACKUP RING FDA
Actual Cross Section 0.07 inch (1.78 mm)
Actual Inside Diameter 1.114 inch (28.3 mm)
Actual Outside Diameter 1.254 inch (31.85 mm)
Measurement System Imperial
Product Category O-Rings - Backup Rings