Flame-retardant NITTO EPTSEALER™ EC-100 Series

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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. (Only foam part has UL94 HF-1 certification, certified thickness follows the UL Yellow Card.)
  • 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.



Thickness[mm] Width[mm] Length[m]
5~20 (Adhesive type is available up to 25mm) 1,000 2

*EC-111P is 900mm width.


Product No. Specific gravity Tensile strength 
Elongation[%] Compressive hardness[N/cm2]
25% 50%
EC-100Series 0.085 7.0 270 0.18 0.28



  • *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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