The KPOR seals consist of a PTFE sealing element which is energised by an O-ring. This results in an exceptionally good sealing function under high loads and good static sealing performance. The KPOR 31 is a single-acting piston seal.
The standard for this design is a PTFE-Bronze/NBR 70 combination. Depending on the area of application, other materials such as PTFE-Glass, PTFE-Graphite and PTFE-Carbon for the seal element and EPDM, FKM, VMQ etc. for the energising element are available. Sufficient guiding of the piston using suitable guide elements is necessary.