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Cast-a-Mold 25T, Half Gallon

Cast-a-Mold 25T

(13 reviews) Write a Review

$24.99 - $531.21

Cast-a-Mold 25T is a general purpose silicone with excellent tear strength. It's easy to mix and will cure at room temp over virtually any surface.

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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.

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Mix Ratio 10:1 by weight
Working Time 1.0 hour
Demold Time 16 hours
Heat Tolerance 300°F +
Tensile Strength 600 psi
Elongation 500%
Tear Resistance 150 ppi
Color Green
Hardness 25-A
Viscosity 30,000 cps

Safety Data Sheet

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13 Reviews

  • 5 Daniel Bryant on Aug 27th 2021
    The Best

    This stuff is great

  • 5 Stephen Canfield on Jul 20th 2021
    Cast a mold 25T

    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 Edward on Jul 2nd 2021
    Great stuff

    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 Joseph Pedigo on Jun 22nd 2021
    Works just like they say!

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