Cast-a-Mold Platinum Food Grade Silicone Rubber

Made in the USA

When you buy from SRC, you'll receive fresh American-made materials every time, direct from the source.

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!

$41.99
$41.99 $41.99
Size: 32 oz
Shipping calculated at checkout.

In Stock
Cast-a-Mold Platinum (Food Grade), Family
$41.99
$41.99 $41.99

What customers say

  • Fantastic resin and Specialty Resin has always been prompt with not only dispatching orders but also with answering any questions I have had.

  • Great range of products, some of the best resins I've used come from here and hope to use more soon. All the best with the move I hope all there are well, take care in these uncertain times

  • great product and company very generous through the years ! always helped me with any problem ! 5 out of 5 stars

Description

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.

Specifications

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

Resources

Cast-a-Mold Platinum - Technical Data Sheet with Instructions

Cast-a-Mold Platinum - Safety Data Sheet

Quality You Can Trust

  • Made in the USA

  • Direct from the Source

  • Money Back Guarantee

Frequently Asked Questions

What happens to resin if it has passed its shelf life?

When a product has exceeded its shelf life, the casting process can become unstable. Working time and demolding time will likely change as well.

Does temperature play a role in the casting process?

Temperature plays a major role when it comes to mixing and curing silicone, resin or epoxy. Heat and humidity can speed up your curing time and cooler temperatures will do the opposite and slow down your curing time.

How much metallic or glow-in-the-dark powder am I supposed to use in my resin or epoxy project?

When adding metallic or glow-in-the-dark powder to your resin, you should start by adding small amounts and continue to add more until you reach the desired result.

What is the right amount of pigment to use?

When adding pigment to a project remember a little goes a long way. Add pigment by drops until you reach the desired color. Make sure to make a note of how much pigment you used so you can match if making multiple batches.

How do I eliminate bubbles in my silicone mold?

There are few ways you can eliminate bubbles in your silicone rubber mold:

  • Degas material within the working time frame.
  • Pour a thin stream and allow material to slowly fill in any negative space.
  • Use a thinning agent that will allow bubbles to rise faster.

Customer Reviews

Based on 28 reviews
75%
(21)
25%
(7)
0%
(0)
0%
(0)
0%
(0)
100.0
E
Eric
Excellent Silicone

I've done a handful of small pours with this silicone and each one has turned out perfectly. It mixes well, cures well, no sticky spots anywhere, and bubbles vacuum out nicely. I will happily buy more when I run low.

T
Tracey Mascaro
I make chocolate molds

I make chocolate molds, I love this silicone, easy to use and fast drying! Always super fast delivery!

s
simon
I love this product

I love this product. Because of the low viscosity, it is able to penetrate into small tight areas and give extremely accurate molds. I use them to make replicas for glass fusing. Works like a dream every time. I will buy more of this product in the future as needed.

W
William Roth
Leakage from Shipped Container

Your product worked well in my application, Coating wood for outdoor use.
BUT - I was disturbed to receive a package that was LEAKING !
The screw cap was a little loose, and the inner seal of "Part A" (activator) had cracked open, allowing maybe 2 ounces to leak out into the packaging.
I can send photos of the packaging w/ leakage if you respond to this survey.

J
James Fino
Food-grade silicone work

Cast-a-Mold has worked very well for making the parts I use in my wine making.

123