RTV Silicone Mold Making Rubber for Resin Casting

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-...

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Product Review

RTV Silicone Mold Making Rubber for Resin Casting

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 useful for applications where superior physical properties are required.

Properties:

Product: Cast-A-Mold 25T
Mix Ratio: 10:1 by weight
Working Time: 3.0 hours
Demold Time: 16 hour
Heat Deflection: 300 f +
Tensile Strength, psi: 660
Elongation %: 390
Tear Resistance, ppi: 140
Color: Green
Hardness: A-25
Viscosity: 40,000 cps

We typically ship same day when orders are received by 2 pm EST Monday-Friday

  • Premium Quality Silicone Rubber - Cast-A-Mold 25T is a premium quality, tin cured, room-temperature-vulcanizing (RTV) silicone casting rubber. Ideal for creating heat-resistant, flexible rubber molds for a variety of projects.
  • Versatile Crafting Supply - This DIY silicone mold-making kit is perfect for casting a wide range of materials like concrete, soap, wax, epoxy and polyurethane resin.
  • Detailed and Durable Molds - Create detailed art and crafts with this silicone mold kit. It resists stretching and high heat, preserving fine details in your cast items, and can be reused multiple times.
  • User-Friendly Mold Kit - The silicone mixes well for effortless casting. With exceptional tear resistance and tensile strength, you can safely bend the mold to release your cast item easily.
  • American-Made Quality - Proudly made in the USA, this product is produced in Specialty Resin & Chemicals' manufacturing facility, ensuring high-quality American-made craft supplies for your projects.

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