With density value 1.2T/m3 . the silicone rubber has its own advantage ,such as the wide temperature range from 
-50℃ to +170℃ , low compression deformation ,  UV resistance , ozone resistance  , weather resistance and aging resistance . 
oppositely , its disadvantage listed as low tear resistance , easy to catch dust  .    

        EPDM extruded strip has density value 1.3T/m3 , with wide temperature range from -40 ℃ to +150℃ , 
UV resistance , ozone resistance ,weather resistance and aging resistance and good tear resistance , which makes it to be most  general 
rubber that 's widely used .