High durability, non-shrinkage and easy de-molding



SILASTOSIL® M line molding and mold-making silicone rubbers are two-component room-temperature-vulcanizing RTV-2 silicone rubbers and ideal for concrete and glass fiber reinforced concrete (GRC, GFRC) casting applications. They are mainly used for making silicone or polyurethane molds for casting the concrete into artful architectural elements, block-outs, glass fiber reinforced concrete, flexible form liners, stamped or textured concrete, ornamental precast and statuary, flowerpots, artificial stone, cast stone, fountain and indoor & outdoor architectural decorative elements from columns to fireplace mantels.


SILASTOSIL® M line molding and mold-making RTV-2 silicone rubbers have excellent resistance and high tear- strength to improve production efficiency. They are easy to use, resist tearing with repeated use, hold severe undercuts and offer many other advantages:


excellent flowability

- easy to mix and to operate

- adjustable working, operation and curing times

- easy de-molding

- excellent non-stick effect

- good resistance to most chemicals

- very good resistance to agressive components of some types of resins

- high degree of precision in reproduction

- very low shrinkage (≤0.1-0.2%)

- high resistance to extreme temperatures and ageing

- optimal tear and tensile strenghts, optimal elongation rates 

- high resistance to wearing and shearing

- cost-effective



TERRAFLUID® line silicone fluids are ideal to adjust the hardness of the silicone rubber molds, and also to reduce the material cost. TERRASIL® AUX line additives for silicone rubbers are ideal to accelerate the curing process, and also to enhance mechanical properties of silicone rubbers.


For further information about our solutions used for Concrete & GRC Casting, please contact us. Our experts will assist you in making the right choices to secure the product properties you seek.


resim art foundry concrete grc casting

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