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Elast-O-Lion 985 - RGD resistant

Low temperature RGD resistant HNBR grade

  • HNBR with good rapid gas decompression resistance at low temperatures
  • Excellent fuel/oil and chemical resistance for oilfield duties
  • Outstanding abrasion resistance
  • Working temperature range -55°C (-67°F) to +150°C (+302°F)

This material has been superseded by Vermilion Five, which offers improvements in performance in key areas. Recognising that Elast-O-Lion 985 has been a market-leading material for many years and is written into many specifications, this material remains available on request.

This grade of hydrogenated nitrile (HNBR) elastomer is specially compounded by James Walker to provide low temperature capability with good rapid gas decompression (RGD) resistance. It is used for oilfield duties in very cold environments and where low temperature thermal shock from rapid gas decompression could occur. 

Its other features include the excellent oil/fuel resistance of conventional nitrile (NBR) elastomers, combined with superior mechanical properties, improved chemical resistance, better weatherability and outstanding abrasion resistance. Elast-O-Lion 985 is validated and specified by oil producers and equipment manufacturers. Working temperature range is -55°C (-67°F) to +150°C (+302°F).

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