Free Shipping

Free Shipping on US Orders over $200

Cast-a-Mold Platinum Food Grade Silicone Rubber

(20 reviews) Write a Review


Create the the perfect silicone mold with Cast-a-Mold Platinum food grade silicone rubber from Specialty Resin & Chemical. This 1:1 mix ratio silicone rubber has a low viscosity and excellent tear strength, making it ideal for creating durable molds of any shape or size. Shop now!

Adding to cart… The item has been added Calculator

Food Grade Silicone Rubber for Mold Making

Cast-A-Mold Platinum is a versatile food grade platinum (addition) cured silicone rubber designed for a wide variety of mold making applications. It offers exceptional performance with its 1:1 mix ratio (by weight), low viscosity, excellent tear strength, tensile strength, elongation, heat deflection, and long silicone mold library life.

Custom Mold Applications:

The project possibilities for Cast-a-Mold Platinum go far beyond crafting custom resin molds. It can be used to make translucent silicone molds for variety of projects, such as:

  • Casting candies and chocolates
  • Cake decorating
  • Casting polyurethanes
  • Epoxy resin casting
  • Polyester resin casting
  • Cement
  • Concrete
  • Soap making
  • Candle making (and other wax applications)
  • Plaster

and many more!

Cast-A-Mold Platinum molding silicone is user friendly and FDA compliant, ensuring safe use in food-related applications. Another advantage is its ability to cure at room temperature, eliminating the need for specialized equipment or vacuum chambers.

Cast-A-Mold Platinum Notes and Tips:

Platinum cured silicone rubber can be heat accelerated. For instance, if you expose the mold to a temperature of 150°F (65°C), the curing time will be significantly reduced from 8 hours to just 30 minutes.

It's important to note that for food applications, it is recommended to wash the cured mold with warm water and soap before using it to ensure cleanliness and hygienic standards.

Addition-cure silicone rubber may be affected by certain contaminants, which can lead to tackiness on the surface of the mold. To avoid this, it's best to steer clear of materials like latex, sulfur-based clays, tin cured silicone rubber, amines, nitriles, and organo-metallic salt-containing compounds. If you're uncertain about the compatibility of the substrate being molded, it's always a good practice to conduct a small compatibility test beforehand. Additionally, applying a clear acrylic lacquer or paint on the pattern can help prevent inhibition. However, polyurethane and latex should not be used in this context.

Cast-A-Mold Platinum is comparable to Smooth-on Mold Star™, Smooth-Sil™, SORTA-Clear™, Ecoflex™ and Dragon Skin™ silicones.

Have questions? Visit our FAQ.

Mix Ratio 1:1 by weight
Working Time 40.0 minutes
Demold Time 8.0 hours
Heat Tolerance 400°F +
Tensile Strength 580 psi
Elongation 500%
Tear Resistance 160ppi
Color Semi-clear
Hardness 20-A
Viscosity 10,000 - 12,000 cps
  • 5 Guy Perry on Feb 1st 2024
    First time using this product and I find it more than exceeds my expectations.

    Great product!

  • 5 Tracey Mascaro on Nov 13th 2023
    Love this silicone!

    I love working with this food grade silicone, I make molds for my chocolates! The molds are perfect! I also use silicone thinning agent in the silicone for my 3D molds!

  • 5 Justin Ente on Jun 9th 2023
    Best silicone

    Used other brands and nothing compares

  • 5 Mark Menke & Tracey Mascaro on May 16th 2023
    Food grade silicone

    Such a great company to deal with, love the food grade silicone, and I had a problem, they took care of it super fast! I tell anyone who wants to make molds, get it from SRC, super fast delivery, good prices, and customer service is awesome! Thank You!

  • 5 Mark & Tracey Mascaro on May 2nd 2023
    Best food grade silicone for mold making

    I make molds for chocolates, I love this silicone, it’s easy to use and clear, I like the clear so you can see where to make the cuts in the silicone, very strong, but flexible, I also use the silicone thinner for even softer molds, it’s a game changer!

  • 5 Edgar Partida on Aug 18th 2022
    Platinum silicone

    Great product.

  • 5 Ivy LePore on May 16th 2022
    Food Grade Platinum Silicone

    I absolutely love this product! It cures to a perfect finish everytime and clients love the end results! Thank you so much!

  • 4 Jaed on May 12th 2022
    Great products

    I haven’t used it yet, but I’ve been shopping this company for several years now, and I haven’t been disappointed by anything I have received!

  • 4 Jaed on May 12th 2022
    Great products

    I haven’t used it yet, but I’ve been shopping this company for several years now, and I haven’t been disappointed by anything I have received!