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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 4,250 cps | 40,000 cps |
| Pot Life | 30 minutes | 45 minutes |
| Color | Lavender | White |
| Elongation @ Break | 250 % | 433 % |
| 100% Modulus | 100 psi | 71 psi |
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‑Sil™ 933 Flame Out | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 4,250 cps | 40,000 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 100A:130B | 1A:1B |
| Pot Life | 30 minutes | 45 minutes |
| Cure Time | 6 hours | 6 hours |
| Shore A Hardness | 30 | 33 |
| Specific Gravity | 1.34 g/cc | 1.42 g/cc |
| Specific Volume | 20.6 cu. in./lb. | 19.5 cu. in./lb. |
| Color | Lavender | White |
| Die B Tear Strength | 40 pli | 50 pli |
| Tensile Strength | 240 psi | 222 psi |
| Elongation @ Break | 250 % | 433 % |
| 100% Modulus | 100 psi | 71 psi |
| Shrinkage | 0.0025 in. / in. | <0.001 in. / in. |
| Useful Temperature (min) | -65 °F | -65 °F |
| Useful Temperature (max) | 400 °F | 450 °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‑Sil™ 933 Flame Out
Smooth-Sil™ 933 Flame Out is designed specifically for flame rated gasket and potting applications.
Smooth-Sil™ 933 Flame Out is a Shore 33A platinum silicone that is mixed 1A:1B by volume or weight. Rubber cures at room temperature (73°F/23°C) with negligible shrinkage. Vacuum degassing is recommended to minimize air bubbles in cured rubber. Cured material is rated to UL 94 V-0
Smooth-Sil™ 933 cures in 6 hours to a soft, strong rubber that is tear resistant and exhibits very low long term shrinkage. An infinite number of color effects can be achieved by adding Silc Pig™ silicone pigments. Applications include electrical potting for flame resistant enclosures, creating gaskets for medical devices and electrical appliances and other applications where a flame resistant, flexible silicone seal is required. Note: This product will not cure against surfaces containing sulfur, even when sealed.