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Elastomeric Belt Material Guide for Fabric Expansion Joints

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Guide to Selecting an Elastomeric Belt Material

  1. Compare the maximum continuous operating temperature of the application against the fabric temperature rating.
  2. If the application has high fly ash or dust loading, select a material with high tensile strength.
  3. If the application is near a fan or where flow turbulence is expected, select a material with high flutter resistance.
  4. Elastomers vary in their chemical resistance. The selected Elastomer should be checked to insure that it is compatible with the particular media it will encounter.
Material Name Elastomer Temp. (F) Service Tensile Strength Flutter Resistance Relative Cost
FLEXXCEL RH125 Hypalon 225 Dry Medium Medium $
FLEXXCEL RE125 EPDM 300 Wet* Medium Medium $$
FLEXXCEL RE25 EPDM 300 Wet* High High $$$
FLEXXCEL RC125 Chlorobutyl 300 Dry Medium Medium $$
FLEXXCEL RC25 Chlorobutyl 300 Dry High High $$$
FLEXXCEL RVF25 Fluoroelastomer  400 Wet Medium Medium $$$$$
FLEXXCEL RVF25 Fluoroelastomer 400 Wet High High $$$$$$$$
FLEXXCEL RVF25M Fluoroelastomer 400 Wet High High $$$$$$$$$$
  • Not suitable for sustained service where oils, hydrocarbons or concentrated minerals acids are present.
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