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PlatSil Gel-25


  • $68.00

PlatSil® Gel-25 Silicone Rubber is a two-part, platinum-catalyzed, liquid silicone system that cures (RTV) to a milky white, Shore A25 rubber. This silicone is most often used to make prosthetic appliances (in conjunction with PlatSil® Deadener LV or Smith's Theatrical Prosthetic Deadener), for lifecasting and mold making.

Mix Ratio

Shore Hardness

Pour Time

Cured Color

Mixed Viscosity

Specific Volume

Demold Time

Shrinkage Upon Cure

1A:1B by weight or volume


5 min.

Milky White

3,500 cP

25 in³/lb

1 hr.


Contamination from sulfur (e.g., sulfur-based clay), amines, tin compounds, cured polyester resin, some paints and some silicone rubbers may inhibit surface cure of platinum-cured rubbers.

PlatSil® Gel Silicone Rubbers 

PlatSil® Gel Silicone Rubbers are the industry standard in the special effects industry for creating life-like theatrical prosthetic appliances for film, television and theater. They are also used for life casting, prop making and general silicone mold making.

These versatile platinum-cured silicones are skin-safe, fast-setting and offer simple 1A:1B mix ratios by weight or volume. 

An array of accessory products can be used independently or in concert to increase working time, accelerate cure time, thicken the mix for brushing/layering, increase Shore Hardness, thin the mix for easier pouring, or “deaden” the rubber to soften and eliminate the snappy, synthetic look and feel of ordinary silicone rubbers.

Technical and Safety Data:
PlatSil Gel Series Technical Bulletin
PlatSil Safety Data Sheet

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