TAP Silicone RTV Mold-Making System

TAP Silicone RTV Mold-Making System

TAP Silicone RTV Mold-Making System is a complete mold-making system that can be used to make virtually any type of mold! Silicone exhibits very low shrinkage, excellent long-term retention of rubber properties and accurate detail reproduction, making it excellent for casting cement, vinyl, wax, plaster, low-melt metals, urethane resins, epoxy resins, and polyester resins.

Based on a two-component, tin-catalyzed, room temperature cured silicone, it is a 25 Shore A mold rubber—meaning it is flexible, has good dimensional stability, and good elongation and tear strength. Follow directions fully for safety and best results. Maximum recommended casting temperature is 350ºF. TAP Silicone has a 6-8 hour de-mold time allowing two part molds to be completed in one day.

Side A (Silicone)
is an off-white liquid with medium viscosity of 60,000 cP. Since this is a tin or condensation cure system, cure inhibition is not common. However some sulfur containing clays can inhibit the cure. The clay TAP carries will not affect the cure. Testing should always be done if there is any uncertainty.

Side B (Catalyst)
is blue to make it easier to tell when the silicone is fully mixed no streaks.. Mixing ratio is 10 parts side A to 1 part side B by weight, or 9-to-1 by volume. Catalyst must be shaken prior to using.

1 lb. of silicone yields about 12 fl. oz.

Use Thixotropic Additive to thicken silicone to peanut butter consistency for blanket molds and on vertical surfaces.

Use Silicone Thinner to reduce viscosity of silicone.
Click here for TAP Silicone RTV label.
Click here for TAP Silicone RTV Catalyst label.

Video for making a simple silicone mold part 1:


This item is a shipping hazard and can only ship via ground delivery within the United States and Canada.

TAP Silicone RTV Mold-Making System

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