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Using Versimold really is simple.  You just mold, and heat to 250° to cure it. Versimold also works great as a silicone putty, which doesn't require curing.


Here's the full Versimold instructions:

1. Remove the specialized rubber material form the package and remove the needed quantity, returning the excess to the container. Cut off portions made during the forming of the gasket can also be returned to the container for later use.

2. Form the material into the desired thickness by using a rolling pin or similar on a flat surface.

TIP: The formed sheet of material can now be used to make an impression on the part that the gasket is intended for, making it easy to outline bolt holes or cutouts.

3. Make the necessary forms and cuts into the material to make the shape you need. Remember, unused material can be returned to the container.

TIP: For a gasket, getting 2 correctly sized punches will work great.

4. Now that the shape is formed, place the material on a metal flat surface for curing (think cookie sheet).

5. Using an oven set to 250°, an industrial heat gun set to mid range or an electric hair dryer, “cure” the gasket until it is shiny and firm. DO NOT USE OPEN FLAME!

6. Allow the your new part to cool until cool to the touch.

7. Peel the mold off of the cookie sheet, and you have a new rubber part for your project!





Frequently Asked Questions

Versimold feels a lot like silly putt when soft.

When cured, Versimold has minor grip, like a golf or hammer handle. That's what makes it great for custom ergonomic tool or gun grips.

Versimold does shrink very slightly when cured depending on part thickness.

Like most silicone rubber products, Versimold is somewhat resistant to most oils and fuels, it must be cured thoroughly and will likely swell somewhat over prolonged exposure.

Versimold is silicone rubber and is far stronger than you might expect. For reference, a ¾" thick "rope" of Versimold can easily hold 35 lbs. for an extended period of time.

It has about 50 durometer hardness (think normal rubber) and is tough as nails.

Versimold's weak points will be at "joints" where it was pushed together in the molding, so be mindful of that when molding.

Absolutely, this is what it was designed for. After curing, Versimold is made to stand 900°+ F.

Unfortunately, as Versimold is a pure silicone rubber compound, it does not like to be “glued”… Usually an acceptable bond can be made with silicone “rtv” type adhesive / caulk products, and also the pieces can be joined using a bit of Versimold to attach the two and curing the assembly.

Absolutely! Versimold is actually a superior silicone putty, because of its chemical structure which causes "crepe hardening" or hydrogen bond formation. Think like play-doh, not like pancakes.

When you start to work Versimold again, these bonds will break, and you can use it again. After about 2 years, this might require a mill.

Cured Versimold will not harden or otherwise deteriorate.

Uncured Versimold lasts about 2 years. After that, it technically still will work, but you will need a press to break the hydrogen bonds that have been formed.

Absolutely! Think silicone wire, which is much higher quality than other wire.

We strongly advise against using Versimold for containers or projects that touch food products.

Versimold does not contain toxic materials, but should not be eaten.

Once it is heat cured, it is extremely stable and does not react with common casting resins.