Silicone Thinner™ is a non-reactive silicone fluid that will lower the mixed viscosity of tin cure (condensation) or platinum cure (addition) silicone rubber products.
Silicone Thinner™ offers the following advantages:
A lower mixed viscosity (A+B) means that the rubber will de-air faster when vacuuming.
Mixed rubber (A+B) will flow better over intricate model detail.
Silicone Thinner™ will lower the ultimate shore hardness (durometer) of cured silicone rubber.
Pot life (working time) is increased in proportion to the amount of Silicone Thinner™ used.
Disadvantage: Ultimate tear and tensile strength are reduced in proportion to the amount of Silicone Thinner™ added, however knotty tear properties of the Mold Max™ series rubbers are unaffected.
Materials should be stored and used in a warm environment (73° F / 23° C). This material has a limited shelf life and should be used as soon as possible. Wear safety glasses, long sleeves and rubber gloves to minimize contamination risk.
*Silicone Thinner® is added as a percentage of the total Part A+Part B rubber system. An accurate gram scale must be used. Weigh out and pre-mix required amount of Silicone Thinner® with Part A of silicone rubber before adding Part B. Mix all components thoroughly and vacuum as directed on mold rubber technical bulletin.
It is not recommended to exceed 10% by weight of total system (A+B).
Because no two applications are quite the same, a small test application to determine suitability for your project is recommended if performance of this material is in question.
We are open. Smooth-On continues to manufacture and is maintaining normal levels of raw material / finished goods inventories. Considered an essential business as defined by CISA, we will continue to manufacture / ship materials during the COVID-19 epidemic. Smooth-On will be closed Fri Apr 10th in observance of Easter Weekend.