To obtain good quality castings it is essential to use the right rubber.
To create high-quality castings, the use of the right kind of rubber is essential.
The exact mixture to be used is determined by the characteristics of the model to be produced.
For example, the presence of undercut parts requires soft, flexible rubber, while moulds large-scale objects will also need to have good heat resistance.
As the market's quality standards have risen, it has been necessary to create new types of rubber for special applications, in addition to the pre-existing ones.
Cabe offers a wide range of silicone compounds to choose from. Our clients are guaranteed to find the product best suited to their needs, certain of using only choice materials.
Choosing the right silicone rubber
In these tables the characteristic of our mould such as hardness and compatible casting materials are grouped by the vulcanization temperature.
Silicone rubber vulcanizing at 180° C
| Compound | Characteristics | Use |
White  |
 70-71 Sh 180°C/356°F |
Very rigid compound, ideal for flat or massive pieces Particularly limited shrinkage. Suitable for zinc or tin alloys. |
Pink  |
65-66 Sh 180°C/356°F |
Rigid compound, ideal for models featuring little undercuts |
Yellow 65R  |
64-65 Sh 180°C/356°F |
Semi-rigid compound, ideal for models with little undercuts. |
Light blue  |
61-62 Sh 180°C/356°F |
Middle flexible compound. Thanks to its very high versatility, it is largely used by customers. Suitable for zinc or tin alloys. |
| Yellow |
59-60 Sh 180°C/356°F |
Very elastic compound, ideal for objects hard to extract. Suitable for zinc or tin alloys and resins. |
Blue  |
57-58 Sh 180°C/356°F |
Very flexible compound, ideal for models with undercuts. Suitable for zinc or tin alloys and resins. |
Red  |
55-56 Sh 180°C/356°F |
Very soft compound, ideal for models with significant undercuts. Suitable for zinc or tin alloys and resin. |
Fuchsia  |
48-49 Sh 180°C/356°F |
Extremely elastic compound. Exceptional to easily remove objects with multiple undercuts Suitable to cast tin alloys, resins and micro-casting wax. |
Silicone rubber vulcanizing at 90° C
| Compound | Characteristics | Use |
| White Mz |
56-57 Sh 90°C/164°F |
Semi-rigid compound, ideal for models with little undercuts. Moderate shrinkage. Suitable for zinc or tin alloys. |
Hazel Mz  |
47-48 Sh 90°C/194°F |
Very soft and elastic compound, little shrinkage Ideal for models with significant undercuts Suitable for zinc or tin alloys. |
| Transparent Lx |
36-37 Sh 90°C/194°F |
Extremely soft compound, little shrinkage, ideal to extract zinc or tin alloy or resin castings. |
*Hardness measured in shore
*Vulcanization temperature in Centigrade and Fahrenheit
