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Back-up Rings
Half o-ring
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ID (Inner diameter) info
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mm
OD (Outer Diameter)
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H (Height)
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ID (Inner diameter)
OD (Outer Diameter)
H (Height)
Material
Application
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431.25x443.24x2.67 431.25 mm x
431.25 mm
443.24 mm
2.67 mm
PTFE
none
443.95x455.94x2.67 443.95 mm x
443.95 mm
455.94 mm
2.67 mm
PTFE
none
456.65x468.64x2.67 456.65 mm x
456.65 mm
468.64 mm
2.67 mm
PTFE
none
469.35x481.34x2.67 469.35 mm x
469.35 mm
481.34 mm
2.67 mm
PTFE
none
482.05x494.04x2.67 482.05 mm x
482.05 mm
494.04 mm
2.67 mm
PTFE
none
494.75x506.74x2.67 494.75 mm x
494.75 mm
506.74 mm
2.67 mm
PTFE
none
507.45x519.44x2.67 507.45 mm x
507.45 mm
519.44 mm
2.67 mm
PTFE
none
532.85x544.84x2.67 532.85 mm x
532.85 mm
544.84 mm
2.67 mm
PTFE
none
558.25x570.24x2.67 558.25 mm x
558.25 mm
570.24 mm
2.67 mm
PTFE
none
583.27x595.26x2.67 583.27 mm x
583.27 mm
595.26 mm
2.67 mm
PTFE
none
608.67x620.66x2.67 608.67 mm x
608.67 mm
620.66 mm
2.67 mm
PTFE
none
634.07x646.06x2.67 634.07 mm x
634.07 mm
646.06 mm
2.67 mm
PTFE
none
659.47x671.46x2.67 659.47 mm x
659.47 mm
671.46 mm
2.67 mm
PTFE
none
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Our range of Back-up Rings:

Back-up rings PTFE
Back-up rings PTFE

PTFE back-up rings, also known as PTFE anti-extrusion rings or support rings, are used to support and protect O-rings from gap extrusion under high pressure. Made from PTFE, these rings are ideal for applications involving high temperatures, high pressure, or aggressive media. Thanks to their shape and material, PTFE back-up rings provide an effective sealing solution for static applications in both hydraulic and pneumatic systems.

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Back-up rings PE
Back-up rings PE
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Back-up rings HPU
Back-up rings HPU
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Back-up rings NBR (Concave)
Back-up rings NBR (Concave)
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Do you have a question about an o-ring?
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If you have questions about the best material for your specific application, you can always contact one of our specialists. They will be happy to help you find the right material for your sealing application.
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