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Cast-a-Mold 25T

$23.00 - $468.00
(4 reviews) Write a Review
Maximum Purchase:
2 units
Calculated at Checkout
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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.
Mix Ratio:
10:1 by weight
Working Time:
1.0 hour
Demold Time:
16 hours
Heat Deflection:
300°F +
Tensile Strength:
600 psi
Tear Resistance:
150 ppi
30,000 cps
Technical Specifications

Safety Data Sheet

4 Reviews Hide Reviews Show Reviews

  • 5
    The Best

    Posted by Daniel Bryant on Aug 27th 2021

    This stuff is great

  • 5
    Cast a mold 25T

    Posted by Stephen Canfield on Jul 20th 2021

    I have been a happy customer nearly three (3) years. Dan and team are always professional and knowledgeable. In addition, very responsive , be it a question or shipment. Great product and a great team!

  • 5
    Great stuff

    Posted by Edward on Jul 2nd 2021

    I've used a number of liquid silicones and this ones definitely my favorite. It's 1hr cure time was perfect considering I had to put it in a vacuum chamber and didn't want to worry about it hardening. The 1:10 ratio is also really easy to work with so I was happy with that too. 10/10.

  • 5
    Works just like they say!

    Posted by Joseph Pedigo on Jun 22nd 2021

    I've been ordering this and many other products from S.R. for years. EXCELLENT customer service and support!