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Seal Solutions Australia
Unit 1, 11 Karratha Street, Welshpool WA 6106
Back-Up Rings

Back-Up Rings

Description

Back-up washers or Anti-extrusion rings are designed to protect o’rings and help prevent extrusion in high pressure applications by closing the clearance gap. Double acting applications (using bi-directional pressure) require the use of two back-up rings, one on either side of the o’ring.
In single acting applications (single sided pressure) where only one back-up ring is required, the back-up is located on the low pressure side of the o’ring; although it is often recommended that two back-ups be used in single acting applications to mitigate the possibility of installing the back-up on the wrong side of the o’ring.

Seal Solutions Australia stock a wide range of back-up rings to suit imperial and  metric sized o’rings. Compounds available: 90 Duro nitrile, 90 Duro Viton, Teflon and polyurethane.

Back-Up Rings
Back-Up Rings
Title Material Temp Pressure Speed Prod No
Back-up Rings PTFE (Teflon) PTFE / Polymyte -100° - +500° F _ _ BUWM/PTFE
Back-Up Rings
Back-Up Rings
Title Material Temp Pressure Speed Prod No
Back-up Rings - NBR/Polyurethane NBR & Polyurethane -40° - +200° F _ _ BUWM/ U/N
Application For These Machines
  • Excavator
    Excavator
  • Backhoe-Loader
    Backhoe-Loader
  • Loader
    Loader
  • Dozzer
    Dozzer
  • Bull Dozzer
    Bull Dozzer
  • Crane
    Crane
  • Forklift
    Forklift
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