R PRO 20 (4 kg /141,10 oz) Silicone Rubber for Silicone Medium Hardness Moulds,Silicone Mould Making kit for DIY, 100% Safe,high Tear Resistance,1:1 Mix Ratio

✔️FEATURES: R PRO 20 is a 1:1 silicone rubber for liquid addition with high tear resistance. This silicone rubber is suitable for modelling and making molds and is very versatile and ideal for making molds with medium hardness (20 shore) that allows you to reproduce even the smallest details and undercuts. ✔️HIGH PERFORMANCE: R PRO 20 shape silicone faithfully copy even the smallest details, allowing you to make 20% more castings than other silicone rubbers, and the molds have no linear shrinkage. It is a very liquid rubber that guarantees easy mixing and does not need to be degassed with vacuum machines. ✔️HARDNESS: The catalyzed rubber allows the creation of soft molds (hardness 20 ShoreA) and highly elastic with high resistance to cracking, the processing time is 45 minutes while the curing time is 3 hours. ✔️FORM PERFORMANCE: The physical life of the mold depends on how it is used (casting materials, frequency, etc.). Casting abrasive materials such as concrete can quickly erode mold details, while casting non-abrasive materials (wax) will not affect the mold details. ✔️ATTENTION: Sulfur-based clay is NOT compatible and can inhibit the catalysis of R PRO rubbers., Weight: 8.81849048 Pounds, Manufacturer: Reschimica