New polymer offers 'step change' in seal temperature and chemical resistance
19 January 2011
High temperature resistance, together with improvements in mechanical and chemical resistance, are now possible with the new Perlast G75TX perfluoroelastomer from Precision Polymer Engineering (PPE). Perlast G75TX is the first perfluoroelastomer to overcome the poor compression performance normally associated with perfluoroelastomers at high temperatures. An ultra-low compression set of just 8%, compared with the more typical 38%, gives the elastomer a longer, in-service life.
In addition, Perlast G75TX has been formulated to provide improved resistance to aggressive chemicals such as acids and amines. By reducing the elastomer's permeability, it is less prone to swelling and more resistant to the effects of high temperature steam. Perlast G75TX is suitable for both dynamic and static applications in the temperature range +327°C (+621°F) to -15°C (+5°F). It can be fully moulded into O-rings (any size up to 2.5m/8ft diameter) and custom shapes.
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