Skip to Main text

Flame-retardant NITTO EPTSEALER EC-100

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.



  • Flame retardant UL94, HF-1
  • semi-closed cell structure
  • super soft / conformable
  • low compression load
  • ozone resistance
  • good weatherability
  • excellent ageing performance
  • sound absorption
  • good recovery property
  • wide range of performing tapes


  1. Semi-closed cell EPDM foam

(Can be combined with Nitto's adhesive technology.)


Thickness[mm] Width[mm] Length[m]
1.5~25 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.


EPT-Sealer EC-100 series are especially designed for waterproofing, air sealing, soundproofing and thermal insulation for electric/electronic equipment.

AUTOMOTIVE – ECU application, electric motors / actuators

INDUSTRIAL – mobile phones, information processing equipment and household appliances

Contact Us

TEL +32-89-360111

Business Hours (WET) 8:00h-17:00h Except for Sat, Sun, and Holidays
Nitto is present in 14 countries in the EMEA region. Find your local contact details here.

Adobe Reader is required to view PDF files.
If not yet installed, please download it from the Adobe website.

Search by other product categories