PT Flex 50 Liquid Rubber is a two-part, liquid polyurethane system that cures (RTV) to a Amber Shore A23-25 rubber. Once Cured would be good for Model Making.
 
Technical Specifications
 
Mix Ratio by Weight: 1A:1B
Shore Hardness: A50
Pour Time: 5 min.
Demold Time: 2 hr.
Cured Color: Amber
Mixed Viscosity: 600 cP
Specific Volume: 269 in³/lb
Specific Gravity: 1
Elongation: 200 %
Tensile Strength:250 psi