Thermal insulation sponge

Shin-Etsu Polymer offers sheets of silicone rubber insulative sponge that provide excellent thermal insulation with good mechanical strength and durability with superb heat and cold resistance.
RA-type has an exposed cell structure focussing on thermal insulation.
CT-type has a closest skin that provides additional shielding for water and air.

Application and appearance
 
   RA-type  CT-type
 Features  Standard type
 Sponge sheet
 Superior heat and cold tolerance
 Thermal inuslation characteristics
 Soft type
 Sponge sheet
 Skin layer and fine bubble structure      
 Application  Thermal insulator
 Packaging and sealing in automotive parts

 Thermal insulator
 Cushion material
 Water and air shielding
Basic properties
   Unit  RA-type  CT-type  
 Relative density    0.8  0.4  water submergence
 Tensile strength  MPa  24    JIS K6301
 Elongation  %  248    JIS K6301
 Hardness  HDA  50  20  JIS K6253 (ISO48)
         
 Tensile strength change  %  -25    225ºC, 70 hrs
 Compression set  %  39    150ºC, 70 hrs, 50% compression
Sheet dimensions (mm)
 Type Thickness Sheet size
 RA 2 ± 0.4
3 ± 0.4
4 ± 0.5
5 ± 0.6
6 ± 0.6
8 ± 0.8
10 ± 0.8
15 ± 1.0
300 x 300
500 x 500
 CT 1 ± 0.3
2 ± 0.4
3 ± 0.6
4 ± 0.8
5 ± 1.0
300 x 850