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, Polyester
Potlife & Demould: Work time - 90 mins / Demould time - 12 hrs
Hardness & Type: Shore A37 +/-2 Silicone Elastomer, 15000cps