Seal Stretcher

Our custom seal stretcher allows you to expand and install PTFE piston seals with ease.

With the seal stretcher:

  1. Fine tune the nut of the mechanism to limit the maximum stretch diameter.
  2. Place the PTFE ring onto the next-nearest smaller diameter step on the sizing mechanism. Apply firm, steady pressure on the seal with the expansion handle until it is expanded to your desired diameter.

This process will allow you to apply the expanded PTFE seal to the piston - we recommend use of our Seal Clasper (product ID RAA165) to do this.

 
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