The R PRO 20 is the perfect sdditive silicone rubber for professional medium hardness molds and it catalyzes in 3 hours.
Kit Size: 500g (250 A+250 B)
Addition silicone rubber. It hardens in 3 hours at room temperature, has a very high dimensional stability (linear shrinkage 0%) and high technical and mechanical performance (+ 15% of casting compared to other tires).
Ideal for making medium hardness professional molds (hardness 21 shoreA) in a simple and safe way.