Parker Seal Group
Piston Seal CQ Profile

Premium PTFE Cap Seal with Anti-Drift Technology

Standard Materials

  • Cap:0401 40% bronze filled PTFE
  • Energizer: 70A Nitrile

Availability:

  • Inch:  Square ring: 1.50” to 10” bore diameter Dual O-ring: 1.500” to 20” bore diameter

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The Parker CQ profile is a bi-directional piston seal for use in medium to heavy duty hydraulic actuators. The CQ profile is a unique seal design that includes a rubber quad seal in the PTFE cap to ensure drift free performance. The PTFE cap is a stable rectangular shape and is energized, depending on its cross section, by a single square ring energizer or dual Parker O-rings. The CQ piston seal is commonly used in applications such as mobile hydraulics, lift trucks, standard cylinders and piston ac­cumulators. Parker's CQ profile is designed to retrofit non-Parker seals of similar design. Available in square ring (shown) and dual O-ring configurations. Options: Notched Walls: Adding an “N” to the end of the part number indicates that notches are to be added to the side walls of the PTFE cap. Notches can help optimize the seal's response to fluid pressure. In application, the void created by the notch allows fluid pressure to fill the cavity between the side face of the gland and the seal. Consult EPS Division for the availability and cost to add side notches to the CQ profile.