TSP433 is an AS568-433 white PTFE (Teflon) 55 Shore D Back-Up Ring supplied with an inside diameter of 5.475 in (139.07 mm), a cross section of 0.275 in (6.99 mm), and an outside diameter of 6.025 in (153.04 mm). In service, 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 known for non-stick, non-contaminating surface characteristics and excellent dielectric properties. The compound resists oxidizing media, solvents, and steam. The material carries a published service range of -65°F (-53.9°C) to 500°F (260°C).
Common environments for this compound include aggressive-media pipelines, chemical processing, and pharmaceutical and biotech.
TSP433 ships individually. Nominal inside diameter is listed as 5 1/2 inch. Review your operating media and conditions against this specification before installation. Not finding the exact configuration you need? APG cross-references from prints, samples and competitor part numbers.
Description *2107-433 PTFE SPIRAL B/U FDA
Actual Cross Section 0.275 inch (6.99 mm)
Actual Inside Diameter 5.475 inch (139.07 mm)
Actual Outside Diameter 6.025 inch (153.04 mm)
Measurement System Imperial
Product Category O-Rings - Backup Rings