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.

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.
Sulfur-less types are also available. (Click here for details)

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
Compression[%]	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]
Compression[%]	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）

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	EC-100	Black	Foam only		Foam is flame-retardant and low VOC type. Only foam "EC-100" has UL94 HF-1 certification. *
		EC-110		Acrylic adhesive	Nonwoven fabric base	For sealing of electronics, OA, equipment, train, etc.
		EC-111P			Film base
		EC-140		Rubber adhesive	Cotton fabric base
	EH-2200 Series	EH-2200	Black	Foam only		Foam is sulfur-less type that excel in resistance to metal corrosion, and is a low-VOC type. Only foam "EH-2200" has UL94 HBF certification. *
		EH-2210		Acrylic adhesive	Nonwoven fabric base	For sealing of electronic component, etc.

* Regarding UL certification, there are thickness limitation, please check details with our sales representatives.