M4642 is perfectly suitable for all moulds with undercuts that are to be reproduced in casting resins, & a certain inherent rigidity of the mould is required.M4642 is a food grade silicone rubber.Recommended for: Food Grade, Concrete, Plaster, Epoxy, Polyurethane, PolyesterPotlife & Demould: Work time – 90 mins / Demould time – 12 hrsHardness & Type: Shore A37 /-2 Silicone Elastomer, 15000cpsPourable, addition-curing, two component silicone rubber that cures at room temperature.Very Good FlowMedium Shore A Hardness (approx 37)Fast non-shrink cure which can be accelerated considerably by the application of heatExcellent long-term stability of the mechanical properties of the cured rubber.High tear strengthOutstanding resistance to casting resins.
