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About NITTO EPTSEALER™

NITTO EPTSEALER fills various types of gaps, to shut out heat, water, sound, or vibration. Highly functional sealing properties have been developed by blending EPDM rubber foam, which offers the best durability among general rubber material, with Nitto Denko’s unique adhesive technology. Superior resistance to heat and chemicals allows stable and consistent performance over long periods of time. A wide range of types are available depending on usage, from flame retardant to soft or high-compression. The superior performance of NITTO EPTSEALER is recognized by various domestic and international industries, and is used in automotives, housing, and home appliances.

Features

  • The main constituent is EPDM rubber foam, which boasts superior heat and chemical resistance (to acids and alkalis) compared to general purpose rubbers.
  • Excellent foaming technology enables control of expansion from 3 to 20 times the original size.
  • Variety of cell structures, such as closed, semi-closed and open cells, are available with Nitto Denko’s extensive foaming process technology.

Structure

Heat-resistance

Test specimens prepared using a #1 dumbbell die were exposed to each temperature condition. At the end of each time interval, the test pecimens were stretched at the rate of 500mm/min., and the maximum elongation before rupture was measured. Retained elongation was calculated as a percentage of the new specimen’s elongation. Measurement temperature: 80°C

Water-tightness

Compression[%] Leakage condition
No.6800 No.685 EE-1000
50 × ×
60 ×
70
80

○:No leakage after 30min. △:Leakage within 30min. ×:Leakage within

【Test method】

  • U-shaped 10mm wide test specimens were punched out and placed between acrylic and aluminum plates for compression to a press load. The test specimens were then filled with water to a depth of 100mm and checked for leakage.

Chemical Resistance

Compression[%] Tensile strength[N/cm2]
No.6800 No.685 EE-1000
Initial 35 10 8
Acid(1%H2SO4) 30 10 7.5
Alkali(1%NaOH) 36 9.8 7.1
  • *20℃×168himmersion

Comparison of Weather Resistance

Each test specimen was placed in a sunshine carbon weather meter and taken out after a set time to measure the elongation by stretching at 500mm/min. Retained elongation was calculated as a percentage of a new specimen’s elongation.

Well-balanced Properties

Environmental Measures (Safety)

Line Up

Foam type Series name Product No. Color Adhesive Structure Features / Applications
Closed cell structure No.6800 Series No.6800 Black Foam only Automobiles: For sealing around windows and lamps
Houses: For sealing of exterior materials and interior/ exterior walls
Foam is low VOC type
*VOC: Volatile Organic Compounds
No.681 Acrylic adhesive Baseless
No.6801 Nonwoven fabric base
No.6801P Film base
EM-142 Rubber adhesive Cotton fabric base
Semi-closed
cell structure
No.685 Series No.685 Black Foam only For various types of sealing (automobiles, home appliances, housing construction materials)
Foam is low VOC type
No.686 Acrylic adhesive Nonwoven fabric base
No.686P Film base
No.687 Rubber adhesive Cotton fabric base
EE-1000 Series EE-1000 Black Foam only For various types of sealing (automobiles, home appliances, housing construction materials, etc.)
Foam is low VOC type
EE-1010 Acrylic adhesive Nonwoven fabric base
EE-1010P Film base
EE-1040 Rubber adhesive Cotton fabric base
EC-100 Series
*UL-94
HF-1
certified foam
EC-100 Black Foam only Foam is flame-retardant.Only foam (EC-100) has UL94 HF-1 certification. (Refer to UL official data sheet for certified thickness)
EC110 Acrylic adhesive Nonwoven fabric base For various types of sealing (home appliances, automobiles, housing construction materials, etc.)
EC-111P Film base
EC140 Rubber adhesive Cotton fabric base
EH-2200 Series
*UL-94HBF
certified foam
EH-2200 Black Foam only Foam is flame-retardant.Only foam (EC-2200) has UL94 HBF certification. (Refer to UL official data sheet for certified thickness)
EH-2210 Acrylic adhesive Nonwoven fabric base For sealing of electronic component, etc.

Applications

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Door mirrors

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Rear combination lights

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Door trim

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Air conditioners

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Ventilators

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Door speakers

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Sealing material for end rail

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Airproof/waterproof packing between sills and footings

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Sealing material for roof tile (ridge, verge, valley).