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The latest Norsok tests carried out on James Walker’s New Generation FR68/90 fluoroelastomer have returned a perfect ‘0000’ rating for a 10.00mm section at 100C.

The testing was carried out at the purpose-built RGD testing facility within the James Walker Technology Centre.

The results revealed a rating of zero defects in all four samples, following rapid gas decompression testing at 100C (212F) using a pressure of 150bar (15MPa) and a decompression rate of 35bar/min (3.5MP/min).

This is well in excess of the 20bar/min industry standard demanded by the Norsok M-710 test regime.

The material was launched in August this year with a clear performance advantage over the best options currently available – the pre-launch test programme at that time having established ‘0000’ ratings at 8.40mm at 100C and 5.33mm section at an elevated temperature of 150 C.

This RGD performance is not achieved at the expense of other material characteristics, however.

FR68/90 retains flexibility for ease of fitting and offers seal stress retention characteristics with compression set figures of just eight per cent after 24 hours at 175C and 10 per cent after 24 hours at 200C.

This is in addition to good Amine and H2S resistance, plus an operational temperature capability of -30 to 200C.

The combined performance parameters of FR68/90 open up new opportunities for extending the use of elastomeric materials to larger sections than previously possible with no loss of RGD resistance.

This holds the possibility to eliminate the need for complex and costly re-engineering of components to accept solutions such as spring energised PTFE seals, which are physically larger, more sensitive to surface finish and more difficult to install.

Although this New Generation material significantly extends the performance envelope of fluoroelastomer (FKM) materials, FR68/90 will not replace the existing elastomers in the James Walker range, such as Elast-O-Lion 101 and FR58/90, which is suitable for many current oil and gas industry applications.

James Walker and Co

James Walker is a dynamic global manufacturing organisation that supplies a vast range of high performance fluid sealing products and associated knowledge-based services to virtually every sector of industry. Our activities range from research and development, product application, manufacture and supply, to plant monitoring, on-site maintenance and seal refurbishment. An intimate knowledge of the industrial plant and processes used by our customers worldwide enables us to solve their fluid sealing problems with best value systems designed to minimise total cost of ownership.

State-of-the-art skills in materials technology, particularly relating to elastomers, polymers, composites and engineering plastics, are central to our success — in addition to the core disciplines of high performance sealing technology and tribology. Extensive expertise in the precision machining of exotic alloys for metallic seals, and tension control fasteners for bolted joints, positions us firmly at the forefront of these technologies. We therefore claim that our products and expertise help to keep industry worldwide running safely and efficiently year-in and year-out.

Our worldwide family of companies has 11 production, engineering, distribution and customer support sites in the UK, and a further 40 spread across Continental Europe, Australia, New Zealand, SE Asia, South Africa and the USA. At the local level, a close-knit network of James Walker companies and official distributors supplies our products and services to over 100 countries. Highly developed e-commerce systems and logistics operations give customers the surety of supply they need. We also work in partnership with customers at all levels. The long-term contracts we forge with multinational corporations cover the requirements of their plants across many continents.

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