40,Trial Size Unit (2.2 lbs./ 1kg.), Each of 1 kg

Details

Series Rubbers Are Premium Water Clear Translucent Silicone Rubbers (Platinum Catalyst) Which Cure At Room Temperature With Negligible Shrinkage. This Product Requires A Gram Scale For Measuring Parts A B. 40 Comes In Shore 40A Hardness And Features High Tensile And Tear Strength.