Silical 120 Liquid Hardener for Pourable Silicone Rubber Silical 125 – 250 Grams

PHYSICAL AND CHEMICAL PROPERTIES

– Catalyst: Silical 125, 5% weight ratio
– Tixotropic additive: Silical TIXO from 2 to 4% weight ratio
– Appearance of Silical 120: white viscous liquid
– Appearance of the cured rubber: white paste
– Working time: approx. 90 min. (at 23°C)
– Demoulding time: 24 hours (at 23°C)
– Viscosity of the ready-to-use mix: 25000 cP approx.
– Linear shrinkage (after 5 d at 23°C): 0.5% max (ISO 4823)
– Specific gravity: 1.19 kg/l
– Hardness (after 24 hours at 23°C): 19 Shore A (ASTM D 2240-05)
– Tensile strength: 2,5 N/mm² (ASTM D 412-06a)
– Elongation at break: 350% (ASTM D 412-06a)
– Tear resistance: 18 N/mm (ASTM D 624/00)