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Flame-retardant NITTO EPTSEALER EC-100 Series

Sealant containing a flame retarder is UL-94 HF-1 certified.

Products of the Nitto Denko EC-100 Series which have obtained UL-94 HF-1 certification are composed of a flexible foam sealing material consisting of EPDM rubber foam with a semi-closed cell structure mixed with a flame retarder. Various types with adhesive layers are available, all of which take advantage of their flexible foam properties. The products can be used for waterproofing, airtightness, soundproofing, or thermal insulation according to the compression ratio.



  • Containing chlorine-free flame retarder, EC-100 series has obtained UL-94 and HR-1 certification, the most stringent standard for flame retardancy of foam.
  • Minimal stress facilitates compression; fits snugly to uneven surfaces thereby enabling airtight sealing and soundproofing.
  • Superior heat, weather, and ozone resistance enables the foam to withstand long-term use.



3~20 mm / 118~787 mil1,000 mm/ 39 in2


Product No.Specific gravityTensile strength 
Elongation[%]Compressive hardness[N/cm2]
EC-100 Series0.0857.02700.180.28

  • *The above values are sample observed values, not the guaranteed performance.


  • Waterproofing, air sealing, soundproofing and thermal insulation for electric/electronic equipment.

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