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Super Seal / Super Sheet

The world’s first waterproof seal materials made of special urethane foam have been developed based on the theory of the contact angle and reverse capillary action.

Features

  • Maintains stability and waterproof characteristics even at low compression.
  • Soft and excellent resilience.
  • Excellent durability.
  • Rich product lineup meeting various customer needs.
  • Environmentally friendly products.

Waterproof theory

Brief description of contact angles

The difficulty for the material to become wet in water can be represented by the contact angle.
Hydrophobic material repels water when the contact angle is at least 90 degrees.

Brief description of the reverse capillary effect

Capillaries composed of hydrophilic material suctions water.
Capillaries composed of hydrophobic material pushes water out.

Waterproof testing method

Physical properties

Item Type Features Density Tensile strength Elasticity Compression hardness * Compression residual strain * Compression residual strain Sealant properties *
Unit     kg/m3 kPa % kPa % mL/cm2/s kPa/24h
Super Seal WB/WG Waterproofing 52 137 185 5.9 8 1> 0.98
KP/KPG Waterproofing 42 118 190 5.9 5 1> 0.98
AS Waterproofing and damping 130 118 120 6.4 6 5 0.98
KB Waterproofing 40 127 280 4.4 5 2 0.69
UB Waterproofing 31 97 110 5.3 5 3 0.49
SB Sound absorption and flame retardant properties 40 108 280 3.9 5 3
Super Sheet HM/HMG Waterproofing 36 150 210 7.9 5 1> 0.98
HP/HPG Waterproofing 48 147 200 7.8 5 1> 1.27
HPU Waterproofing and flame retardant properties 55 100 170 8.0 3 2 0.29
H/HG Waterproofing 60 166 210 6.4 8 1> 1.47
H3U Waterproofing and flame retardant properties 60 160 150 10.7 5 1> 0.98
H3/H3G Waterproofing 60 196 130 11.3 4 1> 2.94
H4 Waterproofing 60 215 130 11.8 5 1> 4.90
H6 Waterproofing 60 235 130 12.7 7 1> 5.88

* 50% when compressed
Note) This data represents typical values but are not necessarily guaranteed.

Major applications of Super Seal and Super Sheet

  • Automotive: Waterproofing HVAC systems, rear lamp, side mirrors, etc.
  • Building construction: Waterproofing exterior wall panel joints, sash openings, and unit baths
  • Home appliances: Sealing and waterproofing refrigerators, freezer display cases, and air conditioners
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