The TST327SO is an AS568-327 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 1.725 in (43.82 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 2.145 in (54.48 mm). This back-up ring bridges the extrusion gap so the primary seal holds its shape under load.
The compound resists solvents, steam, and strong acids and bases. PTFE (Teflon) is valued for non-stick, non-contaminating surface characteristics and excellent dielectric properties. Continuous operating temperature is published at -65°F (-53.9°C) to 500°F (260°C).
Typical settings include food and beverage, aggressive-media pipelines, and laboratory equipment.
Stocked as TST327SO and sold individually. As always, verify media compatibility and operating conditions against the requirements of your specific application.
Description *327 PTFE SOLID BACKUP RING FDA
Actual Cross Section 0.21 inch (5.33 mm)
Actual Inside Diameter 1.725 inch (43.82 mm)
Actual Outside Diameter 2.145 inch (54.48 mm)
Measurement System Imperial
Product Category O-Rings - Backup Rings