Fastener Seals
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Fastener Seals

Used to Seal off Potential Leak Paths on Threaded Fasteners

Fastener seals consist of an inner rubber component used with an outer metal washer that supports the sealing function of a fastener such as a screw or a bolt. The combination eliminates any clearance gaps between the housing components and protects against potential leaks. Our fastener seals cover a variety of applications including bolts, screws and tube fittings to provide a reliable sealing solution.

How They Work

Thread, fastener and bonded seals are used to seal off potential leak paths on threaded fasteners such as bolts or threaded rods. Our fasteners are designed to compress a predetermined amount once installed reducing the gap between the fastener and the mating components.

Fastener Seals

Types of Fastener Seals

Product Characteristics

  • Standard rubber material is NBR. Standard metal is zinc-plated carbon steel
  • FKM, EPDM, and Silicone rubber as well as other metal/plating materials are available upon request
  • Special material requests may include a one-time setup charge

Our Types of Fastener Seals

US Bonded Seals

Similar to a standard washer, a US Bonded Seal combines the rigidity of an outer metal ring along with a flexibility of an inside rubber seal. The metal washer provides much needed support while keeping the inner rubber seal from being over compressed and eliminating gaps to create a form-fitting seal.

USZO Fastener Seals

Similar to a standard washer, a Bonded Seal combines the rigidity of an outer metal ring along with a flexibility of an inside rubber seal. The metal washer provides much needed support while keeping the inner rubber seal from being over compressed and eliminating gaps to create a form-fitting seal.

USZL Thread Seals

USZL Thread Seals differ slightly from other Fastener Seals in appearance and application. The inner rubber seal has a triangular shape design for sealing directly against the threads of the fastener. USZL Thread Seals will prevent fluid from leaking out past the bolt through the threaded seal and can easily be assembled and disassembled as needed from contact surfaces without the use of special tools. USZL Thread Seals are readily available in standard fastener sizes and can be reused with proper removal.

Get in Touch!

Do you have any questions? Would you like a regional expert consultation on the sealing solution that best meets your requirements? We look forward to assisting you with your inquiry.


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