*2107-334 PTFE SPIRAL B/U FDA
AS568-334 white PTFE (Teflon) 55 Shore D Back-Up Ring with an inside diameter of 2.6 in (66.04 mm), a cross section of 0.21 in (5.33 mm), and an outside diameter of 3.02 in (76.71 mm). This back-up ring allows a standard o-ring to operate at higher pressures than it could unsupported.
Material PTFE (Polytetrafluoroethylene)
Minimum_Temp -65°F (-53.9°C)
Maximum_Temp 500°F (260°C)