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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 6,000 cps | 10,000 cps |
| Mix Ratio By Volume | N/A (gram scale required) | 1A:1B |
| Pot Life | 50 minutes | 90 seconds |
| Cure Time | 16 hours | 1 hour |
| Shore A Hardness | 15 | — |
| Specific Volume | 20.5 cu. in./lb. | 69 cu. in./lb. |
| Color | Black | White |
Disclaimer
Although we do our best to ensure accuracy, Smooth-On offers no warranties, promises, and/or representations of any kind, either expressed or implied, as to the accuracy, completeness, or reliability of the information contained on this Compare Tool, nor suitability of the information contained herein to your particular circumstances. Smooth-On assumes no liability for losses or damages of whatever nature (direct, indirect, consequential or other) associated with your use, or inability to use, the Compare Tool, or from your use (or failure to use) the information contained herein. Other useful tools include product technical bulletins and our extensive FAQ section. You can also contact our technical support team.All Technical Data
| FMC™ 201 | Soma Foama™ 25 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 6,000 cps | 10,000 cps |
| Mix Ratio By Volume | — | 1A:1B |
| Mix Ratio By Weight | 100A:12B | 1A:1B |
| Pot Life | 50 minutes | 90 seconds |
| Handling Time | — | 20 minutes |
| Cure Time | 16 hours | 1 hour |
| Shore A Hardness | 15 | — |
| Expansion (approximate) | — | 2-3 times |
| Foam Density | — | 25 lb/ft³ |
| Specific Gravity | 1.35 g/cc | 0.40 g/cc |
| Specific Volume | 20.5 cu. in./lb. | 69 cu. in./lb. |
| Color | Black | White |
| Tensile Strength | 150 psi | — |
| Elongation @ Break | 700 % | — |
| 100% Modulus | 29 psi | — |
| Shrinkage | negligible in. / in. | — |
Product Description
FMC™ 201
FMC™-201 is part of the Smooth-On family of polysulfide rubber mold compounds. FMC™-201 cures overnight with negligible shrinkage to a soft Shore A15 rubber that stretches and exhibits good tear resistance. Molds made of FMC™-201 are very durable and will perform in production.
FMC™-201 is ideal for those applications that require capturing intricate detail from a variety of model surfaces. Unlike polyurethanes, FMC™-201 is not sensitive to moisture and can be poured directly over wet plaster or water/sulfur based clays. Common applications include molds for foundry and pattern work, sculpture (lost wax process), casting various gypsum products and waxes.
Soma Foama™ 25
Soma Foama™ is a soft, two-component platinum silicone flexible foam that is versatile and easy to use. Soma Foama™ 25 is a higher density foam vs. original Soma Foama™ 15 which expands 2-3 times its original volume and develops a uniform 25 lb./cu. ft. cell structure (400 kg/m³). Vibrant colors can be achieved by adding Silc-Pig™ silicone color pigments. Cured foam is high heat resistance (will resist up to 350°F/176°C), water resistant, UV resistant and resists oxidation and ozone degradation.