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Buna-N Back-Up Ring

Buna-N Back-Up Ring

SKU ORB274
$14.49
In stock: 5 available
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Buna-N Back-Up Ring
Product Details
Brand: Value Brand

Buna-N Back-Up Ring

The Buna-N Back-Up Ring is a Buna-N (nitrile) support ring used alongside an O-ring to help reduce extrusion and improve sealing performance in higher-pressure applications. It’s the quiet sidekick that helps the main seal keep its shape—because nobody likes an O-ring that tries to escape under pressure.

Country of Origin
Varies by production batch

Key Features / Specifications

  • Part Number: ORB274
  • Product Type: Back-up ring
  • Material: Buna-N (nitrile)
  • Function: Helps support O-rings and reduce extrusion under pressure
  • Use: Installed with an O-ring in compatible grooves as a sealing support component

Ideal For

  • Hydraulic or pneumatic sealing where an O-ring needs extra extrusion resistance
  • Replacing worn or damaged back-up rings in compatible assemblies
  • Applications using Buna-N/nitrile sealing components
  • Anyone who wants their seals to stay in the groove—literally
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