Bonded Seals are seals that are used to seal off potential leak paths on the shoulder of fasteners – such as bolts.  Seal & Design’s bonded seals are designed so that after tightening down the fastener in the assembly, the rubber of the seal will be compressed to the predetermined amount which will cause it to seal the clearance gap between the fastener and the mating components. Bonded Seals are intended to take the place of an o-ring in certain assemblies.

By using a Bonded Seal there is no need to have an o-ring groove machined into the component that the fastener will pass through. The seals are typically either a buna or viton elastomer with a cadmium plated carbon steel washer.  Please view our new webpage for standard sizes, and contact Seal & Design sales for special sizes and materials.

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