Platinum Silicone Mold Rubbers
PlatSil® platinum silicone mold rubbers consist of two parts (Part A & Part B), which, after mixing, cure at room temperature to flexible, high-strength rubbers. Platinum silicone mold rubbers are sometimes preferred over tin silicone rubbers because they do not shrink on cure and have a longer library life.
- Do not exhibit shrinkage upon curing so they are useful for casting dimensionally stable parts for highly accurate prototyping and model making applications.
- Do not require release agents when casting most materials.
- Cured molds have a long library life.
- These rubbers can be poured as supplied or thickened with PlatThix liquid thickener for brush-on molds.
Typical Uses & Casting Materials
- Resin casting (polyurethane, polyester, epoxy)
- Foam casting
- Wax casting
- Sculpture reproduction
- Soap and candle making
- Plaster casting
- Cold cast bronze art
CAUTION: Care should be taken to ensure objects that come in contact with PlatSil® liquid rubbers are not contaminated with amines, sulfur, tin compounds and others which may inhibit the cure of the system.
There are three series within the platinum silicone mold rubber line:
Platinum Silicone Rubbers
|PlatSil® 71-Series||8 individual product options. Shore A10 to A40 hardness range. Includes one translucent rubber option. 1A:1B, 1A:10B, and 1A:5B mixes available. Demold times ranging from 30 minutes to 24 hours. SiliGlass (a rubber that shatters like glass – for spfx) & SiliFoam (a soft, silicone foam) are included in this series.|
|PlatSil® 73-Series||7 individual product options. Shore A15 to A60 hardness range. Includes two translucent rubber options. 1A:1B and 1A:10B mixes available. Demold times ranging from 1 hour to 16 hours.|
|PlatSil® Gels||3 individual product options. Soft, skin-safe, translucent rubbers for delicate casting projects, including theatrical prosthetics and special effects. Shore OO30, A10 & A25 hardness.|
Other Platinum Silicone Rubber Video Tutorials on the Polytek YouTube Channel:
- Tutorial: How to Make a Poured Block Mold [Part I] using PlatSil 71-20 (in the 71-Series)
- Tutorial: How to Make a Poured Block Mold [Part II] using PlatSil 71-20 (in the 71-Series)
- Tutorial: Casting a PlatSil Gel-10 Hand using PlatSil Gel-10 (in the PlatSil Gel Series)
- Tutorial: Making a Mold of a Tabletop and Casting Concrete in the Mold using PlatSil 73-40 (in the 73-Series)