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Key Differences
| Product Type |
|
|
| Mixed Viscosity | 80,000 cps | 120 cps |
| Pot Life | 2.5 hours | 2.5 minutes |
| Cure Time | 6 hours | 15 minutes |
| Shore D Hardness | — | 65 |
| Shore A Hardness | 30 | — |
| Color | Translucent | White |
| Elongation @ Break | 550 % | 20 % |
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
| Si-Tac™ | Smooth-Cast™ 65D | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 80,000 cps | 120 cps |
| Mix Ratio By Volume | 1A:1B | 1A:1B |
| Mix Ratio By Weight | 1A:1B | 100A:93B |
| Pot Life | 2.5 hours | 2.5 minutes |
| Cure Time | 6 hours | 15 minutes |
| Shore D Hardness | — | 65 |
| Shore A Hardness | 30 | — |
| Specific Gravity | 1.08 g/cc | 1.05 g/cc |
| Specific Volume | — | 26.4 cu. in./lb. |
| Color | Translucent | White |
| Tensile Strength | — | 2,400 psi |
| Elongation @ Break | 550 % | 20 % |
| Shrinkage | — | 0.01 in. / in. |
Product Description
Si-Tac™
Si-Tac™ is a two-part pourable liquid silicone adhesive that is applied to natural or synthetic fabric/clothing for the purpose of keeping sports or leisure wear in place during exercise. Garments will not shift or fall. Si-Tac™ can be mixed and applied by hand, but is also often meter mix dispensed and delivered to the garment surface at strategic points through a narrow static mixing tube before being quickly heat cured. Certified Skin Safe, cured rubber is soft, comfortable and flexes with every movement; never noticed by the wearer.
Si-Tac™ silicone performs over a wide temperature range, is very strong, sweat resistant and lasts through many laundering cycles.
Smooth-Cast™ 65D
The Smooth-Cast™ Semi-Rigid line of low-cost semi-rigid urethane casting resins cure quickly to semi-rigid plastics that offer excellent impact resistance. These plastics are easy-to-use (mix ratio is 1A:1B by volume) and have low viscosities for minimal bubble entrapment. Vibrant colors are possible by adding SO-Strong™, UVO™ or Ignite™ color pigments.
These semi-rigid plastics are good for making impact resistant prototypes, models, toys, props, climbing holds, etc.
NOTE: Smooth-Cast™ 57D and Smooth-Cast™ 65D are also suitable for rotational casting applications. Do not use other Smooth-Cast™ semi-rigid plastics for roto casting.