Parker Seal Group
Back-up Ring 5100 Profile

O-ring Groove Back-up

Standard Materials:

  • Z4651D60
  • Z4729D65 

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Parker’s 5100 Series back-up rings offer extrusion resistance up
to 7,000 psi for dynamic applications and up to 20,000 psi for static
applications. They are physically interchangeable with most existing
o-ring back-ups. Our easy to identify orange colored 4651 Polymyte®
material used with this profile, provides outstanding extrusion resistance when compared to hard nitrile back-ups plus offers extended fluid compatibility. 5100 Series back-ups are designed to meet standard industrial o-ring groove dimensions for single or dual back-up groove designs and will always install in the proper direction.

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