Parker Seal Group
Rod Seal OD Profile

PTFE Buffer Seal

Standard Materials:

  • Cap: 0401 Bronze-filled PTFE
  • Energizer: 70A Nitrile

Availability:
  • Inch: 0.313" to 20" rod diameter
  • Metric: 8mm to 500mm

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The Parker OD profile is a rod seal that can be used as a buffer seal in conjunction with other primary rod seals or in tandem with itself, creating a zero leak seal. The OD is a uni-directional seal, with a unique design that allows the seal to relieve pressure build up. This pressure relief feature allows the OD to be used in a tandem or multiple seal arrangement. The OD features low friction, long life, and versatility. When the rod is going through its power stroke (higher pressure) the seal is riding on a sealing point, creating a high compression point and limiting leakage. As the rod goes to its return stroke, it rocks forward, creating a larger sealing surface on the rod. The compression force is spread out over a larger area, reducing the load on the rod. This allows any trapped fluid to easily return to the system.