When a product media is especially aggressive towards currently available elastomers such as NBR, EPDM and Viton®, the SIGMACOAT series plate heat exchangers with PTFE enveloped elastomeric gaskets offer the heat transfer efficiency of a SIGMA heat exchanger but with added resistance, resulting in improved operating times, safety and reliability.


  • High chemical resistance to aggressive media up to 170°C
  • Quick and easy gasket changing with the SIGMAFIX adhesive free gasketing system
  • No creep or compression set of the PTFE
  • Elastomeric Gaskets, NBR or EPDM, enveloped in non-porous PTFE
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