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NITTO EPTSEALER No.685 is a semi-closed cell EPDM foam with excellent sealing properties.

The semiclosed cell structure of EPT-Sealer No.685 combines the flexibility of open cell types with the excellent sealing capabilities of closed cell types (after compression). This unique foam can be laminated with Nitto’s advanced adhesive technology to seal (complex) gaps against water, wind, dust, noise and heat.
Contact Us
  • TEL +32-89-360111
  • FAX +32-89-362242

Business Hours (WET) 8:00h-17:00h

Except for Sat, Sun, and Holidays


  • Semi-closed cell structure
  • Super soft / conformable
  • Low compression load
  • Ozone resistance
  • Good weatherability
  • Fungus free
  • Excellent ageing performance
  • Good water sealing
  • Excellent sound insulation


  1. Semi-closed cell EPDM foam

(Can be combined with Nitto's adhesive technology)


Foam thickness 3 - 30 mm
Tensile strength 125 kPa
Elongation 600%
Density 130 kg/m³
Compression load (50%) 6.9 kPa
Waterabsorption (50%) 1.9%
Watertightness (65%) No leakage


EPT-Sealer No.685 is especially designed to seal (complex) gaps against water, wind, dust, noise and heat. Depending on the applications, the foam needs to be compressed between 50-80% to activate its sealing properties.

AUTOMOTIVE – sealing of HVAC unit, dashboard, air duct, glass run, fire wall.

BUILDING & CONSTRUCTION – sealing of exterior panel joints, solar panels.

INDUSTRIAL – sealing of air-conditioners, mobile phones, refrigerators.

Contact Us

Business Hours (WET) 8:00h-17:00h (Except for Sat, Sun, and Holidays)

  • TEL +32-89-360111
  • FAX +32-89-362242

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