Parker Seal Group
Rod Seal CR Profile

PTFE Rod Cap Seal to Retrofit O-ring Glands

Standard Materials

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

Availability:

  • 0.125" to 16" rod diameter 

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The Parker CR profiles are cap seals with anti-extrusion, low friction and low wear features. The seal is a bi-directional rod seal for use in low to medium duty applications. The CR profiles will fit into a standard O-ring groove with a standard size Parker O-ring without modification. There are three CR sizes that correspond with the back up rings that are used with standard O-rings. The CR profiles are designed as two back up rings connected by a wear resistant, low friction PTFE cap seal. The CR profile offers long wear, low friction and anti-extrusion, and because of its short assembly length, requires minimal space in the rod housing. The seal is commonly used in applications such as mobile hydraulics, machine tools, injection molding machines and hydraulic presses. Parker's CR profiles are designed to retrofit non-Parker seals of similar design. Options: Notched side walls: Notches can be added to the side walls of the PTFE cap. This can help to optimize the seal's response to fluid pressure. Notched side walls help ensure that fluid pressure fills the cavity between the side face of the seal and the side face of the seal gland. Consult EPS Division for the availability and cost to add side notches to the CR profile.