PTFE piston seal mountings can be eased to a great extent by means of a contrsictor tool. By using this item we may eliminate the possibility of a damaged seal and the PTFE seal regains its original size and fits into the groove precisely.


In heavy duty environment and for even more precise accuracy, the metal stripe version should be used.


1. After heating or soften the PTFE seal, use cloth tapes to bind both sides of the seal, and enter into the groove along the edge of the piston

2. Circle the seal with cloth, use the constrictor to tighten. It will take 3 to 5 minutes to reach the restoring effect

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