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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 4,250 cps | 80 cps |
| Pot Life | 30 minutes | 20 minutes |
| Cure Time | 6 hours | 4 hours |
| Shore D Hardness | — | 70 |
| Shore A Hardness | 30 | — |
| Specific Volume | 20.6 cu. in./lb. | 26.4 cu. in./lb. |
| Color | Lavender | Off White |
| Tensile Strength | 240 psi | 3,000 psi |
| Elongation @ Break | 250 % | 8 % |
| Shrinkage | 0.0025 in. / in. | 0.007 in. / in. |
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
| OOMOO™ 30 | Smooth-Cast™ 322 | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 4,250 cps | 80 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 100A:130B | 100A:90B |
| Pot Life | 30 minutes | 20 minutes |
| Cure Time | 6 hours | 4 hours |
| Shore D Hardness | — | 70 |
| Shore A Hardness | 30 | — |
| Specific Gravity | 1.34 g/cc | 1.05 g/cc |
| Specific Volume | 20.6 cu. in./lb. | 26.4 cu. in./lb. |
| Color | Lavender | Off White |
| Die B Tear Strength | 40 pli | — |
| Tensile Strength | 240 psi | 3,000 psi |
| Tensile Modulus | — | 134,000 psi |
| Elongation @ Break | 250 % | 8 % |
| 100% Modulus | 100 psi | — |
| Compressive Strength | — | 3,550 psi |
| Compressive Modulus | — | 40,300 psi |
| Flexural Strength | — | 3,500 psi |
| Flexural Modulus | — | 110,000 psi |
| Shrinkage | 0.0025 in. / in. | 0.007 in. / in. |
| Heat Deflection Temp | — | 140 °F |
| Useful Temperature (min) | -65 °F | — |
| Useful Temperature (max) | 400 °F | — |
Product Description
OOMOO™ 30
No Vacuuming – No Scale – Easy To Use . . . OOMOO™ 30 is an easy to use tin cure silicone rubber compound that features a convenient one-to-one by volume mix ratio (no scale necessary). It has low viscosity for easy mixing and pouring . . . vacuum degassing is not necessary. This product cures at room temperature with negligible shrinkage. OOMOO™ 30 has a 30-minute pot life, with a six-hour cure time.
For The Novice Mold Maker - OOMOO™ silicones do not have great tear strength. They are good for making simple one- or two piece block molds. If you require a high-tear strength silicone, Mold Max™ silicones are recommended.
OOMOO™ 30 is suitable for a variety of art-related and industrial applications including making one and two-piece block molds for sculpture and prototype reproduction, casting plaster, resins and wax. OOMOO™ silicones are also suitable for electrical potting and encapsulation applications.
Smooth-Cast™ 322
The Smooth-Cast™ 320 Series consists of ultra-low viscosity casting resins that yield virtually bubble-free off-white castings. The Smooth-Cast™ 320 resins are sister products to our popular Smooth-Cast™ 300 Series of bright white plastics, but are easier to color using SO-Strong™ or Ignite™ color tints. Smooth-Cast™ 320 series is easy to mix and pour, offering the convenience of a 1A:1B by volume or 100A : 90B by weight mix ratio.
The Smooth-Cast™ 320 Series resins readily accept pigments and fillers (such as URE-FIL™ 3, 5 and 7 from Smooth-On). Fully cured castings are tough, durable, machinable and paintable. They resist moisture and mild solvents. Applications for Smooth-Cast™ 320 Series resins include reproducing small to medium size sculptures, making prototype models, special effect props, decorative jewelry and taxidermy (bones, antlers, teeth etc.).