James Walker

Industries & Applications

Pharmaceutical and Bioprocessing

Elast-O-Pure® Dynamic

Instances of premature diaphragm failure are all too common and incur significant unscheduled changeout costs. In addition there is the loss of contaminated production batches and the administration tasks before production can recommence. Elast-O-Pure Dynamic is the new answer to this problem - developed with new materials and optimised product design, this product has been subjected to exhaustive testing under simulated operational conditions to provide a solution that is reliable, predictable and offers longer operational life than existing options.

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We supply many products and services that are designed to meet the stringent requirements of the pharmaceutical, bioprocessing and food processing sectors.

Pharmaceutical and BioprocessingOur development teams continue to focus on these market sectors to produce the specialised materials and products that are required. This is particularly evident in relation to the standards introduced by national and industry bodies. Our range of Elast-O-Pure elastomeric materials is specifically designed for the biopharmaceutical industry and offers the total materials traceability for the biopharmaceutical industry.

Products and services of specific benefit include...


James Walker developed Elast-O-Pure® GF75 Black to meet the most stringent high-purity equirements. Rated to FDA 21 CFR 177.2600 and USP 28 Class VI, it provides excellent resistance to steam and strong mineral acids, and exhibits very low Total Organic Carbon levels. Elast-O-Pure® SIL70 Translucent is a high-purity elastomer, developed to meet the most stringent requirements. This platinum-cured grade of silicone is rated to FDA 21 CFR 177.2600 and USP 30 Class VI, and is available in a hardness grade of 70 IRHD, making it suitable for a wide variety of fluid sealing duties.

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Hygienic Clamps and GasketsHygienic Clamps and Gaskets

We have developed our Elast-O-Pure Hygienic Clamp Gaskets, based on Elast-O-Pure EP75 Black ethylene-propylene-diene elastomer, that is rated to USP 34 Class VI, to meet the stringent requirements of the pharmaceutical and bioprocessing sectors.

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Sealing and Fluid Handling PartsSealing and Fluid Handling Products

We are authorised distributor in the UK, France and Ireland for the design, supply and technical support of sealing and fluid handling parts made by DuPont from its many grades of Kalrez® perfluoroelastomer (FFKM). Various Kalrez grades are suitable for high purity applications in pharmaceutical production and bioprocessing. DuPont Kalrez® 6221 and 6230 are especially suited to WFI systems, SIP cleaning and other critical systems.

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PTFE Gaskets and JointingsPTFE Gaskets and Jointings

Our range of modified PTFE includes pure, multi-directionally expanded material and also filled PTFE options. Covering an extensive range of applications, particularly where aggressive chemicals are handled or hygiene is top priority, these materials are available in sheet form or as precision-cut gaskets to any shape, size or quantity.

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Gaskets and Sheet JointingsFlange Gaskets and Sheet Jointings

Carbon-fibre based jointing is recommended for waste product and general steam handling application. We produce precision cut gaskets - almost instantly - to any shape, size or quantity from any sheet material using CAD/CAM controlled abrasive waterjet cutters and laser systems.

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Tank Lid SealsTank Lid Seals

Our Tankatite® range of resilient packings will seal lids on static tanks, road and rail tankers, ISO containers and marine hatches. Specific grades cater for all known bulk liquid cargoes in all IMO classes, as well as chemicals, aggressive cargoes under an inert gas blanket, heated cargoes, and higher lid pressures.

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TTension Control Fastenersension Control Fasteners

RotaBolt® tension control fasteners provides accuracy to ±5%. These converted bolts and studs are custom-manufactured for critical applications where the failure of a bolted joint would have serious health & safety, environmental or financial consequences. They are widely used on pressure vessels, heat exchangers, pipelines, mechanical plant and structures.

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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 the heaviest jacks and cylinders. All the products are designed to give optimum equipment performance with long trouble-free operating life.

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EExpansion Joints and Bellowsxpansion Joints and Bellows

We provide the complete engineered solution to ductwork expansion problems. The Comflex® range of expansion joints and flexible bellows that we design, manufacture and install are famed for their reliability and longevity in aggressive environments. They can operate at temperatures from -60°C to well over +500°C.

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