James Walker

Industries & Applications

Marine Propulsion

New material for use with EALs

With the introduction of regulations such as the US Environmental Protection Agency’s Vessel General Permit (VGP) requiring vessels to use Environmentally Acceptable Lubricants (EALs), it is essential to develop a clear understanding of the effect on seals and components of switching to such lubricants. A major result of this project is the launch of Bi-O-Lion® - a new elastomer compound specifically designed for marine propulsion applications where EALs are in use.

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James Walker has been in the business of fluid sealing and control for over 125 years. Throughout our history we have developed sealing solutions and components in parallel with advances in marine propulsion technology, developing a detailed knowledge and appreciation of marine propulsion applications and issues in the process.

James Walker products cover four key areas of marine propulsion...

  • Bureau VeritasConventional Propulsion Systems
  • Azimuth Systems
  • Fin Stabilisers
  • Steering Gear

We have Bureau Veritas material type approval for elastomeric lip seals in stern tube sealing applications - including applications involving Environmentally Acceptable Lubricants.

James Walker products are globally recognised by marine engineers for their quality and reliability. Today, we design, manufacture and supply a highly diverse range of specialised products to the world’s commercial and naval fleets, as well as to shipyards and original equipment manufacturers.

In addition, we work closely with design engineers to develop marine equipment sealing products that can be used with confidence in all areas of maritime activity.


Rotary Lip SealsRotary Lip Seals

The Walkersele® family of radial lip seals provides customers with a vast combination of lip profiles, materials and construction to protect bearing assemblies on rotating shafts and rotary plant. We mould Walkerseles from 10mm up to unlimited diameter. Using our patented Walkersele OSJ-2 on-site joining technique, the seals can be fitted without plant stripdown.

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Tension Control FastenersTension Control Fasteners

RotaBolt® stud and bolt tension monitoring systems are accurate to ±5%. These are used across all industry sectors where the failure of a bolted system could have serious health and safety, environmental or financial consequences. RotaBolt tension control is recommended for structural, mechanical and flange tightening applications.

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Hydraulic Sealing ProductsHydraulic Sealing Products

Our family of hydraulic sealing products covers virtually every hydraulic application. Ranges of rod/gland seals, piston seals, wipers and bearing strips suit the most accurate instruments and control actuators up to the heaviest extrusion and forging presses, jacks and cylinders. All these products are designed and proven to give optimum equipment performance with long trouble-free operating life.

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Custom Products and ServicesCustom Products and Services

This is our greatest area of expertise. The research and development facilities of James Walker Technology Centre, combined with our world-class manufacturing capabilities for high performance elastomers and engineering plastics, enable us to approach any fluid sealing problem with confidence. Much of our high-level work for the defence and aerospace sectors is confidential, and we are accustomed to operating under these conditions and fully respect the security issues involved.

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