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Polygel® Series Mold Rubbers
Polygel® Series mold rubbers are designed for brush-on and spray-on blanket molds as they self-thicken to a thixotropic consistency when low viscosity Parts A & B are mixed together. These room-temperature curing rubbers are non-sag and therefore especially useful for application on vertical or overhead surfaces.
The brush-on Polygel® option is more suitable for smaller-scale projects while sprayable Polygel® options are more often used for larger-scale projects (e.g., monumental sculpture reproduction).
NOTE ON FOUNDRY WAXES: Certain foundry waxes can cause excessive oiling in Polygel® rubbers; this is the case when liquid Polygel® is applied to the foundry wax and when the foundry wax is poured into cured Polygel® molds. Perform a small test cure to ensure compatibility.
- Two-part polyurethane rubbers
- Room temperature curing (RTV)
- Shore Hardness Options: A35 & A50
- Self-thickening formula
- Brushable and sprayable versions
- Simple 1A:1B mix ratio by weight or volume
- Reproduces fine detail
|Polygel® 35 Brush-On Rubber||Polygel® 35 is a Shore A35, 1A:1B mix, self-thickening polyurethane liquid mold rubber designed for making thin, stretchy brushed molds. This product has a 10 to 15-minute working time and a 16-hour demold time.|
|Popular Mold Shell Materials||Thin blanket molds should be backed with rigid, supportive mold shells. Poly 1512X Liquid Plastic with PolyFiber II is a popular option for this.|
*All polyurethane mold rubbers can be made “brushable” with the addition of a thickening agent, such as PolyFiber II.
Select the product below for additional product details and buying information:
|Polygel® Spray 35||Sprayable version of Polygel® 35. Use with meter-mix spray equipment. This product has a 1A:1B mix ratio, Shore A35 hardness, 10-minute working time, and 16-hour demold time.|
|Polygel® Spray 50||Designed for spray application using meter-mix spray equipment. 1A:1B mix ratio, Shore A50, 5 to 7-minute working time, 16-hour demold time.|
|Popular Mold Shell Materials||Thin blanket molds should be backed with rigid, supportive mold shells. EasyFlo Spray FR is a sprayable polyurethane plastic that can be used to make sprayed mold shells and Poly 1512X Liquid Plastic with PolyFiber II is a popular option for making brush-on mold shells.|
|Spray Equipment||PlasPak Spray Guns/Regulators, available for 1A:1B and 1A:10B mixes.|