Bonded Seal product guide
Bonded Seals
Metal-and-rubber sealing washers designed for threaded connections and high-pressure assemblies.
- Integrated sealing washer
- Controlled compression
- Connection-focused design

Product overview
Understand the Product Before Selecting a Specification
ouning bonded seals combine a metal washer with a vulcanized elastomer sealing lip. They are used where dependable sealing and controlled compression are required around bolts and fittings.
Integrated sealing washer
A metal washer and bonded elastomer lip combine load distribution and sealing in one component.
Controlled compression
The metal portion helps limit over-compression of the sealing element during assembly.
Connection-focused design
Bonded seals are commonly considered around bolts, fittings, and threaded hydraulic connections.
Product scope
Applications, Materials, and Supply Options
Use these categories as a starting point. The final specification depends on the complete application.
Common Applications
- Hydraulic fittings
- Pipe connections
- Automotive assemblies
- Heavy equipment
Material Options
- NBR bonded to steel
- FKM bonded to steel
- Stainless steel options
Supply Capabilities
- Standard size ranges
- Material and finish options
- Packaging options
- Dimensional confirmation
Before requesting a quote
Selection Factors for Bonded Seal
More complete input leads to a clearer product and material discussion.
Connection dimensions
Provide the bolt or fitting size, contact surfaces, washer dimensions, and available installation space.
Pressure and media
State the pressure range and all fluids that contact the elastomer sealing lip.
Metal specification
Confirm the required base metal, corrosion protection, surface finish, and any appearance constraints.
Assembly method
Include tightening conditions, mating surface quality, and whether the joint will be opened repeatedly.
Project workflow
A Practical Review Process
The steps remain clear whether you are identifying a standard part or developing a custom specification.
- 01
Define
Share the product, drawing, dimensions, service conditions, and quantities.
- 02
Confirm
Align the material, hardness, tolerances, tooling, samples, and documentation.
- 03
Validate
Review samples and complete the application-specific approval process.
- 04
Supply
Maintain confirmed specifications and identification for repeat requirements.
Questions & answers
Bonded Seal Questions
Common questions about selecting and requesting bonded seals.
Where are bonded seals commonly used?
They are often used around threaded connections, hydraulic fittings, plugs, and bolts where a compact sealing washer is appropriate.
Are different elastomer and metal options available?
Options can be reviewed according to the media, temperature, corrosion environment, finish, dimensions, and quantity.
What should I provide for a bonded seal quotation?
Send the size or drawing, elastomer and metal requirements, working pressure, media, quantity, and packaging needs.
