Specialty Resin & Chemical LLC.

Superior Casting Resins & RTV Silicone Rubber

RTV Silicone Rubber

Cast-A-Mold 25T is a general purpose rtv silicone elastomer which exhibits excellent tear strength, long library life, and accurate detail reproduction. Cast-A-Mold 25T is a condensation cured silicone (tin catalyzed ) It is used to make rubber molds that can be used to cast polyurethanes, epoxy's, polyester's, cement, concrete, soap, wax, plaster, etc.. It is easy to mix and de-air, and will cure at room temperature over virtually any surface. Cast-A-Mold 25T is extremely usefull for applications where superior physical properties are required.


Product: Cast-A-Mold 25T
Mix Ratio: 10:1 by weight
Working Time:  1.0 hour
Demold Time: 16 hours
Heat Deflection: 300 f +
Tensile Strength, psi: 600
Elongation %: 500
Tear Resistance, ppi: 150
Color: Green
Hardness: A-25
Viscosity: 30,000 cpds






Cast-A-Mold 30TF is faster and slightly harder than the Cast-A-Mold 25T. It is a general purpose rtv silicone elastomer which exhibits excellent tear strength, long library life, and accurate detail reproduction. Cast-A-Mold 30TF is a condensation cured silicone (tin catalyzed ) It is used to make rubber molds that can be used to cast polyurethanes, epoxy's, polyester's, cement, concrete, soap, wax, plaster, etc.. It is easy to mix and de-air, and will cure at room temperature over virtually any surface. Cast-A-Mold 30TF is extremely usefull for applications where superior physical properties are required.


Product: Cast-A-Mold 30TF
Mix Ratio: 10:1 by weight
Working Time:  15.0 minutes
Demold Time: 5 hours
Heat Deflection: 300 f +
Tensile Strength, psi: 600
Elongation %: 500
Tear Resistance, ppi: 150
Color: Blue
Hardness: A-30
Viscosity: 30,000 cpds









Cast-a-Mold thixotropic additive is a one to three percent by weight additive that is specifically formulated for brush on molding. After mixing into Cast-A-Mold silicone rubber the material will thicken to a creamy paste that can easily be brushed on to vertical or overhead surfaces without sagging or running. A thin layer of non-thixotropic silicone should be applied first to capture detail and achieve a bubble free surface
























Mold-Dough 25P is a two component silicone putty that is easy to use, odorless, and non-toxic. It is ideal for a wide range of molding applications which include: making impressions, hobby/art projects, model-making, special effects, rapid prototyping, mold making, etc.. Mold-Dough is very easy to use just take equal amonts of side "a" and side "b" and knead together until you get a uniformed color then press the object wanted molded into it. Mold-Dough has a 4 minute working time and 30 minute demold time. This is ideal for professional model makers, hobbists, crafters, and taxidermists. Mold-Dough works excellent with polyurethane, epoxy, and polyester casting resins.


Product: Mold-Dough 25P
Mix Ratio: 1:1 by weight / volume
Working Time: 4.0 minutes
Demold Time: 30.0 minutes
Heat Deflection: 400 f
Tensile Strength: >120 psi
Elongation: >270%
Tear Strength: >30 pli
Color: Pink
Hardness: A-25











Note: Mold-Dough is a addition cure (platinum catalyzed) system. As such, it can be heat accerlerated and is subject to inhibition/poisoning by the usual factors which include (but are not limited to) sulfur, sulfur based clay, sulfur compounds, and amines.

RTV SILICONE RUBBER
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Cast-A-Mold 25T
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