Document Centre Send Us Your Enquiry About Us Industries & Applications Products & Services Contact Us Industries & Applications Semiconductor and Electronics We are a leading supplier of the very special fluid sealing products needed by the world's semiconductor manufacturers. Since the late 1980s we have worked with the industry's design engineers to develop new materials and fluid seals that will operate efficiently in the highly aggressive environments encountered. In addition, we are Authorised Distributor in the UK, France and Ireland for the supply and technical support of sealing and fluid handling parts made of DuPont™ Kalrez® perfluoroelastomer. This, combined with our expertise in high performance elastomers and engineering plastics, enables us to offer customers in the semiconductor industry one of the most comprehensive product portfolios currently available. These products include... O-Rings Sealing and Fluid Handling Engineering Plastics Precision Cut Gaskets High Performance Sheet Jointings Sealing and Fluid Handling Parts As an authorised distributor in the UK, France and Ireland for DuPont™ Kalrez® parts, we supply and provide technical support for perfluoroelastomer (FFKM) sealing products and fluid handling components. Numerous grades of Kalrez® have been tailored specifically for semiconductor processes, including plasma and gas deposition applications, as well as thermal processes and wet processes. Read More Engineering Plastics We have vast experience of problem solving by the design and manufacture of seals and other components in our Fluolion® PTFE, as well as DuPont™ Vespel® and Zymaxx®, PEEK™ from Victrex and other exotic materials. Semiconductor industry applications with Vespel® include clamp rings, composite rings, baratron inserts, spacers and screws. Read More Precision Cut Gaskets We swiftly produce precision cut gaskets and other complex profiles to any shape, size or quantity from any sheet material. Cutting capabilities include CAD/CAM controlled abrasive waterjet cutters and laser cutters that work from customers' CAD files, or scanned in drawings, templates or samples. All standard flange designs are held in memory. Read More O-Rings We precision mould O-Rings of every size and to every standard, in a vast range of general and high performance elastomers. These include fluoroelastomers (eg, DuPont™ Viton®), hydrogenated nitriles (our Elast-O-Lion® range), and compounds based on Aflas® from Asahi Glass - as well as nitriles, ethylene propylene, silicones and fluorosilicones. We stock many thousands of types and sizes of O-Rings in our most popular materials for immediate delivery, and can precision manufacture non-stocked items within hours, when necessary. R ead More High Performance Sheet Jointings Our leading jointing brands include Ultra High Purity Supagraf® expanded graphite, Chieftain® (carbon-fibre based) and Centurion® (glass and aramid fibres). Specification and commercial grade elastomer sheets, including DuPont™ Kalrez® perfluoroelastomer, are also widely used as gasket materials. Read More Document Centre For industry or application News Desk Case studies, images and news Current Vacancies Global career opportunities Sign up for products and services news Back to top ABOUT US Home About James Walker Our History Procurement News Desk Career Opportunities Customer Satisfaction Contact Us INDUSTRIES & APPLICATIONS Chemical and Petrochemical Construction Defence and Aerospace Engineering and Manufacturing Food and Beverages Marine Propulsion Marine Transportation Metallurgical Mineral Oil and Gas Paper, Pulp and Board Pharmaceutical and Bioprocessing Power Semiconductor and Electronics Valves Water and Waste PRODUCTS & SERVICES Cartridge Seal Systems Compression Packing Critical Metallic Sealing Elastomer Technology Engineering Plastics Environmental Excellence Expansion Joints and Bellows Flange Management and Joint Integrity Flooring and Decking Products Gaskets and Sheet Jointings Hydraulic Sealing Products Mechanical Seals O-rings Ring Type Joints Rotary Seals Seals in PTFE and Engineered Thermoplastics Static Seals Tension Control Bolting Valves Vibration Attenuation Products DOCUMENTS & PAPERS Case Studies Technical Papers and Presentations Document Centre FOLLOW US James Walker on Twitter James Walker on LinkedIn James Walker on YouTube James Walker on Instagram Sign up for products and services news © All contents copyright of James Walker. Part of the James Walker Group. an embado solution CONTACT US | TERMS OF USE | LOGIN