1234 North Avenue Luke Lane
South Bend, IN 360001


T-Lon Solutions

TOQ Series Piston Seal

The TOQ hydraulic piston seal is a proven reliable “zero-leak” seal for both low and high pressure systems for applications requiring holding loads for an extended time period.

The TOQ seal is a double-acting filled T- LON® PTFE compound with an o-ring elastomer energizer designed for reciprocating applications along with an x-ring elastomer energizer on the OD to minimize leakage / OD blow-by.  The filled PTFE seal ring is manufactured with an interference fit with the bore and optimum compression with the o-ring and x-ring energizers.  This offers excellent sealability at low pressures and high pressure when the cylinder experiences ballooning.


  • Low seal drag/friction (Minimize energy loss)
  • No Stick-slip (Smooth Operation)
  • Long seal life from T-LON® filled PTFE compounds
  • Available for cylinders up to 20″ diameter


  • Accumulators
  • Mobile Hydraulic Cylinders
  • Lift Cylinders
  • Agriculture Equipment
  • Holding Cylinders
  • Filling Machines
  • Testing Machinery


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Have questions? Our team is ready to help with anything you need. Feel free to reach out.

Contact T-Lon 888.340.TLON