Backup rings for hydraulic seals are used to restrict extrusion and destruction of the O-Ring.
K.O.K.’s PTFE material is well regarded for its durability and quality. We produce a wide range of PTFE backup rings in both Metric and Imperial sizes. Depending on the application and your design requirements, we can produce PTFE back up rings with splicing or without.
Min/Max Temperature Range:
Min/Max Strength & Compression: up to 5000lb/inch squared
Chemical Resistance: good, especially to mineral oils, water soluble oils and water glycol fluids
Min/Max Size: 6~ 230 mm
Available Materials: PTFE, PTFE+GR, PTFE+GRAPHITE, PTFE+GF+MOS2
Primary Applications: Piston, Shock absorber
