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Key Differences
| Product Type |
|
|
| Mixed Viscosity | Paste | 1,100 cps |
| Mix Ratio By Volume | 1A:1B | N/A (gram scale required) |
| Pot Life | 20 minutes | 4 minutes |
| Cure Time | 24 hours | 48 hours |
| Barcol 935 Hardness | 75 | — |
| Shore A Hardness | — | 85 |
| Specific Volume | 20 cu. in./lb. | 25.4 cu. in./lb. |
| Color | Black | Off White |
| Tensile Strength | 3,000 psi | 1,573 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
| PC-3™ | Simpact™ 85A | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | Paste | 1,100 cps |
| Mix Ratio By Volume | 1A:1B | — |
| Mix Ratio By Weight | 1A:1B | 85A:100B |
| Pot Life | 20 minutes | 4 minutes |
| Handling Time | 2 hours | 2 hours |
| Cure Time | 24 hours | 48 hours |
| Barcol 935 Hardness | 75 | — |
| Shore A Hardness | — | 85 |
| Specific Gravity | 1.4 g/cc | 1.09 g/cc |
| Specific Volume | 20 cu. in./lb. | 25.4 cu. in./lb. |
| Color | Black | Off White |
| Die C Tear Strength | — | 182 pli |
| Tensile Strength | 3,000 psi | 1,573 psi |
| Elongation @ Break | — | 164 % |
| 100% Modulus | — | 1,213 psi |
| Flexural Strength | 5,000 psi | — |
| Shrinkage | 0.003 in. / in. | <.007 in. / in. |
| Compressive Yield Strength | 5,000 psi | — |
Product Description
PC-3™
Smooth-On PC-3™ Laboratory Table Top Cement is a two-component, black epoxy resin compound designed to join, bond and caulk sections of laboratory counters and tables. This epoxy resin cement is heavily filled and will adhere to vertical surfaces without sagging. It cures at room temperature with extremely low shrinkage.
Simpact™ 85A
Simpact™ 85A urethane is a low odor, fast-setting urethane elastomer which offers very high tear strength, impact resistance and wear resistance. Simpact™ urethanes are phthalate free, mercury free and MOCA free. Simpact™ urethanes pour easily. Working time is 4 minutes, handling time is 2 hours and full cure time is 48 hours at room temperature.
Cured rubber has exceptional performance characteristics and dimensional stability. Simpact™ urethanes can be colored with SO-Strong™, UVO™ or Ignite™ colorants. Simpact™ urethanes are suitable for making impact resistant props, prototypes and display pieces.
This material may congeal if exposed to cold temperatures. To reconstitute, Part A & B must be heated to 90°F (33°C) then thoroughly mixed to an even consistency.