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ZA 4 LT ROSSO (0,5kg+0,5kg)
4 Shore A of ROSSO is a bicomponent (base and catalyst) addition RTV silicon rubber that vulcanizes at room temperature. Indicated for the duplication of models with small recesses. Mould-making ,model-making , Silk-screen printing on ceramic and Pad printing for its remarkable reproduction accuracy, high dimensional stability and mechanical strength, the excellent laser incision capability and ink transferring property.
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Chemical and Physical Properties
Vulcanized product
Mixing ratio 1 : 1
Viscosity of pre-catalyzation mixture 1700 - 1800 cP
Mixing time at 23 °C (73 °F) 1’
Working time at 23 °C (73 °F) WT= 10’ - 13’
Setting time at 23 °C (73 °F) ST= 90’
Shore A hardness after 24 hours 2-3 shA
Tensile strenght 1.5 ± 0.3 N/mm2
Elongation at break >500 %
Tear resistance (Die B) 7 – 8 N/mm
Tear resistance (Die C) 4.5 – 5 N/mm
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Hardness 2-3 shAProcessing time 10-13 percWeight 1 kg/pcs