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PEEK Back Up Ring

Downhole PEEK back-up rings

Downhole PEEK back-up rings

JST's back up ring compensate for large temperature fluctuations. Using Back-up Rings allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and where there are reciprocating or rotating movements.

Back-up Rings are protective and supporting elements with no sealing function.

The back up ring material could be  PEEK, modified PTFE.

  • Brand:

    JST Seals
  • Item NO.:

    DQQ/DQK
  • Payment:

    T/T
  • Product Origin:

    China
  • Shipping Port:

    Guangzhou
  • Order(MOQ):

    50
  • Product Detail

Downhole PEEK back-up rings 


JST's back up ring compensate for large temperature fluctuations. Using Back-up Rings allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and where there are reciprocating or rotating movements. 

Back-up Rings are protective and supporting elements with no sealing function. 

The back up ring material could be  PEEK, modified PTFE. PEEK™ back-up rings are designed to prevent extrusion in elastomer O-ring sealing systems.


JST makes custom and standard PEEK back-up rings.

Custom sizes up to 24” outer diameter.


Elastomer O-rings serve as effective seals for dynamic and static applications in hydraulic and pneumatic equipment systems. A drawback of elastomer O-rings is their tendency to extrude into the clearance of mating surfaces with increasing pressures and temperatures. Higher temperatures impose a severe burden on the physical and mechanical properties of elastomer O-rings, which further increases their tendency to extrude. The combination of high pressures and high temperatures is a common occurrence in fluid systems. This establishes the need for the back-up ring in preventing O-Ring extrusion.


JST makes various types of PEEK™ back-up ring designs.


PEEK back-up rings material

Virgin PEEK™

● Engineered thermoplastic.

● PEEK™ can be used up to 480°F.

● Excellent chemical resistance.

● Very low moisture absorption.

● Good wear and abrasion resistance.

Glass filled PEEK™

● PEEK™ with the addition of glass fibers.

● Glass fibers reduce the expansion rate and increase the flexural modulus.


Advantages:

1. Prevents O-Ring extrusion.
2. Prolongs O-Ring service life.
3. Allows O-Rings to be utilized in higher pressure applications, where larger extrusion gaps are required and where there are reciprocating or rotating movements.
4. Compatible with virtually all media and gases.
5. Easy installation.



Working  Conditions
Working Pressure
Temp range
Media
≤10000PSI
≤350°F
Compatible with virtually all media and gases

Size:

34.90X29.36X1.78mm
47.60X41.78X2.29mm
47.60X43.56X1.42mm
52.77X47.23X2.03mm
57.19X48.6X3.45mm

57.62X52.08X2.03mm

59.23X55.27X2.29mm

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Send A Message

    If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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