APG stocks the TSP115, an AS568-115 white PTFE (Teflon) 55 Shore D Back-Up Ring supplied with an inside diameter of 0.674 in (17.12 mm), a cross section of 0.103 in (2.62 mm), and an outside diameter of 0.88 in (22.35 mm). A back-up ring extends o-ring service life by supporting the seal against extrusion under high pressure.
PTFE (Teflon) is specified for non-stick, non-contaminating surface characteristics and excellent dielectric properties. It resists solvents, strong acids and bases, and nearly all industrial chemicals. The material carries a published service range of -65°F (-53.9°C) to 500°F (260°C).
Maintenance and OEM teams specify it across semiconductor fabrication, pharmaceutical and biotech, and laboratory equipment.
Order part number TSP115, sold individually. Review your operating media and conditions against this specification before installation.
Description 2107-115 PTFE SPIRAL B/U FDA
Actual Cross Section 0.103 inch (2.62 mm)
Actual Inside Diameter 0.674 inch (17.12 mm)
Actual Outside Diameter 0.88 inch (22.35 mm)
Measurement System Imperial
Product Category O-Rings - Backup Rings