This back-up ring is supplied in AS568-122 white PTFE (Teflon) 55 Shore D with an inside diameter of 1.112 in (28.24 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 1.318 in (33.48 mm), catalogued under part number TST122SO. It installs on the low-pressure side of an o-ring to prevent extrusion into the clearance gap at elevated pressure.
As a material, PTFE (Teflon) delivers one of the lowest coefficients of friction of any solid and non-stick, non-contaminating surface characteristics. It resists solvents, strong acids and bases, and oxidizing media. The material carries a published service range of -65°F (-53.9°C) to 500°F (260°C).
Typical settings include pharmaceutical and biotech, aggressive-media pipelines, and chemical processing.
TST122SO ships individually. Application requirements vary, so validate compatibility with your process conditions prior to installation.
Description 122 PTFE SOLID BACKUP RING FDA
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 1.112 inch (28.24 mm)
Actual Outside Diameter 1.318 inch (33.48 mm)
Measurement System Imperial
Product Category O-Rings - Backup Rings