JAMES WALKER - James Walker develops and compounds its own range of elastomer materials, holding over 300 unique formulations including many bespoke developments for specific customer applications across the biopharmaceutical, nuclear, defence, and oil & gas industries. This capability expands our options when seeking solutions for customer challenges, allowing the modification of existing materials or creation of completely new bespoke options. In addition to our extensive portfolio of elastomers, we have also developed a proprietary range of engineered thermoplastic materials which are now utilised and specified across a wide range of applications from sub-sea pipelines to brake and bearing components for trains. In-house formulation and compounding provides total traceability from raw materials through every stage of processing and manufacture to the finished product that we ship to you. Repeatability and reliability of process is something that is essential to many of our customers in industries such as biopharmaceutical, defence and nuclear. Working in partnership to solve engineering challenges in order to improve the operation, safety, reliability and performance of our customers’ plant and processes.

Product List

Compression packing

  • Compression packing overview
  • Fugitive emissions
  • Hydrogen service
  • Oxygen service
  • Packing for pumps
  • Packing for valves
  • Static applications

Critical metallic sealing

  • Critical metallic sealing overview
  • Custom components
  • Quality assured standard products


  • Elastomers overview
  • Biopharmaceutical materials
  • Biopharmaceutical products
  • H2 ready elastomers
  • Nuclear materials
  • Oil & gas materials
  • Oil & gas products
  • O-rings

Engineered thermoplastics

  • Engineered thermoplastics overview
  • Custom solutions
  • Devlon materials
  • H2 ready plastics
  • Spring-energised seals
  • Subsea products
  • Valve seats


  • Gaskets overview
  • CNAF gaskets
  • Graphite gaskets
  • Flange isolation gaskets
  • H2 ready gaskets
  • High recovery gaskets
  • PTFE gaskets
  • Cork-elastomer gaskets
  • Kammprofile gaskets
  • Spiral-wound gaskets
  • Ring joint gaskets       

Hydraulic sealing

  • Hydraulic sealing overview
  • Bearing strips and wipers
  • Piston seals
  • Rod/gland seals

Load indicating fasteners

  • Load indicating fasteners overview
  • RotaBolt

Rotary sealing

  • Rotary sealing overview
  • Wind power systems
  • Marine propulsion systems
  • Metallurgical industry
  • Cartridge seals
  • General industry
  • Tunnel boring