Back Up Rings

120 (complete ring)

Complete back-up ring. This is the best performing back-up ring, which provides the best support for the O-ring, with the drawback being more complicated installation.



  • Optimal performance, at the cost of more complicated installation, because the ring is uncut
  • Allows use of O-rings in certain high-demand applications



  • Depends on the material, usually -200°C to 200°C