DERAY ColdMelt is the ultimate water blocking system for automotive wire harness feed-through locations. Typical applications of DERAY Coldmelt is water/moisture ingress elimination. The standards of DERAY ColdMelt 105°C – Water Blocking System approved to major OEM water blocking specifications.

Features and Benefits

Features and Benefits of DERAY ColdMelt 105°C – Water Blocking System are listed below.


  • A specially designed heat shrink tube and mastic strip that seals 100% of the time
  • Low temperature installation that reduces thermal stress and protects the cable insulation
  • Cables are embedded individually into the mastic strips forming a barrier against fluids and moisture penetration
  • Accommodates and seals harness bundles of up to 130 cables
  • Flexible installation allows adaption to the production environement
  • Grommet standardization
  • Good adhesion on PVC, XLPE and PP-EPDM cable insulation
  • Continuous operating temperature: -40°C to 105°C


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