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Cast-a-Mold Platinum (Food Grade)

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Cast-a-Mold Platinum is a food grade silicone rubber with a 1:1 mix ratio, low viscosity, and excellent tear strength.

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Cast-A-Mold Platinum is a food grade platinum (addition) cured silicone rubber used for a variety of applications. It exhibits an easy 1:1 mix ratio, low viscosity, excellent tear strength, tensile strength, elongation, heat deflection, and long library life. Cast-a-Mold Platinum can be used to make translucent rubber molds for casting candies, cakes, polyurethanes, epoxy's, polyester's, cement, concrete, soap, wax, plaster, etc.. It is user friendly, translucent, FDA compliant, and will cure at room temperature.

Platinum cured silicone rubber can be heat accelerated. For example if you heat the mold  at 150 f the cure time will be reduced from 8 hours to 30 minutes.

Note: For food applications you will need to wash the cured mold with warm water and soap before using.

Addition cured silicone rubber may be inhibited by certain contaminants resulting in tackiness on the surface of the mold. Latex, sulfur based clays, tin cured silicone rubber, amines, nitriles, organo-metallic salt containing compounds should be avoided. If you are unsure of the compatibility of the substrate being molded a small test is recommended. To prevent inhibition it is usually helpful to coat the pattern with a clear acrylic lacquer or paint. Do not use polyurethane or latex.


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Mix Ratio 1:1 by weight
Working Time 40.0 minutes
Demold Time 8.0 hours
Heat Deflection 400°F +
Tensile Strength 580 psi
Elongation 500%
Tear Resistance 160ppi
Color Semi-clear
Hardness 20-A
Viscosity 10,000 - 12,000 cps
  • 5 moss studios on Jan 13th 2022
    cast-a-mold platinum

    yes all worked fine for my purpose, love buying products from Specialty Resin!

  • 5 Angela Yates on Oct 20th 2021
    Palt 25 Silicone

    This silicone is so easy to work with and it picks up the smallest most intricate details. It works great with UV resin and has enough flexibility to be used with chocolate.

  • 4 James LaPointe on Oct 19th 2021
    cast a mold

    very good. long work time and holds up well for repeated casts.

  • 4 Charles DeFate on Sep 20th 2021
    Love it

    Every time I buy this I'm super satisfied.

  • 5 Kia Solorzano on Sep 1st 2021
    Cast a mm old

    This is by far the easiest silicone to use. I tried another kind of silicone recently and was not impressed

  • 5 Tyler on Jul 26th 2021
    Lure Molds

    After a little bit of a learning curve with making a mold box for this product and a couple hundred dollars spent on this product, I'm very satisfied with results. After pouring a thin coat on my master and letting the air bubbles come to the surface, pouring the remaining material is a breeze and the final product is nice and smooth with very minimal blemishes.

  • 5 Angela on Jul 17th 2021
    Palt 25 Silicone

    This silicone is fantastic. It's easy to work with and created beautiful molds every single time. I love the details is picks up. It's my absolute most favorite silicone to use.

  • 5 Isis on Jul 9th 2021


  • 5 Janet Kingan on Jul 5th 2021
    Very good product

    This is a great, easy to use silicone. I am an artist and I make molds of my work, and although this is not inexpensive, it is easy to use and there is no waste.