C
mpare
T
l
Key Differences
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | Paste |
| Pot Life | 30 minutes | 10 minutes |
| Cure Time | 16 hours | 24 hours |
| Shore D Hardness | — | 70 |
| Shore A Hardness | 40 | — |
| Elongation @ Break | 1,000 % | 1.14 % |
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
| ReoFlex™ 40 | Plasti-Paste™ II | |
|---|---|---|
| Product Type |
|
|
| Mixed Viscosity | 1,500 cps | Paste |
| Mix Ratio By Volume | 1A:1B | 1A:2B |
| Mix Ratio By Weight | 1A:1B | 62A:100B |
| Pot Life | 30 minutes | 10 minutes |
| Handling Time | — | 90 minutes |
| Cure Time | 16 hours | 24 hours |
| Shore D Hardness | — | 70 |
| Shore A Hardness | 40 | — |
| Specific Gravity | 1.02 g/cc | 1.0 g/cc |
| Specific Volume | 27.2 cu. in./lb. | 27.73 cu. in./lb. |
| Color | Off White | Off White |
| Die C Tear Strength | 85 pli | — |
| Tensile Strength | 490 psi | — |
| Tensile Modulus | — | 235,000 psi |
| Ultimate Tensile | — | 2,150 psi |
| Elongation @ Break | 1,000 % | 1.14 % |
| 100% Modulus | 73 psi | — |
| Compressive Strength | — | 4,980 psi |
| Compressive Modulus | — | 62,700 psi |
| Flexural Strength | — | 3,840 psi |
| Flexural Modulus | — | 203,000 psi |
| Shrinkage | <.001 in. / in. | 0.005 in. / in. |
| Heat Deflection Temp | — | 130 °F |
Product Description
ReoFlex™ 40
ReoFlex™ urethane rubbers offer superior physical and performance properties for production casting of wax, plasters, and resins. ReoFlex™ urethanes are available in 20A, 30A, 40A, 50A and 60A Shore hardnesses and feature convenient one-to-one by volume mix ratios. Vacuum degassing is not necessary and ReoFlex™ rubbers cure with negligible shrinkage to a durable rubber that will last in production. ReoFlex™ “Wet” rubbers will shrink somewhat over time vs. “Dry” formulations.
ReoFlex™ mold rubbers are used for a variety of applications including making molds to reproduce sculpture and architectural elements, as well as for making special effects, toys and prototypes. Vibrant colors can be achieved by adding So-Strong™ Color Tints, available from Smooth-On.
Casting Concrete? Look into the VytaFlex™ series of urethane mold rubbers. VytaFlex™ urethanes were formulated specifically for casting concrete / pigmented concrete and feature Smooth-On’s exclusive ‘V-Polymer™’ technology.
FOR COMMERCIAL/INDUSTRIAL USE ONLY
› Click here for more ReoFlex™ rubber products.
Plasti-Paste™ II
New Plasti-Paste™ II is a two component fiber-filled resin that is designed for vertical surface application. This no-odor formulation is an improved version of our original Plasti-Paste™ formula, and the cured product is different in the following ways:
- Plasti-Paste II is now phthalate free.
- Cured plastic can be painted (original Plasti Paste™ can not)
- It is harder, more rigid with better heat resistance.
Part A is a liquid and Part B is a paste. New Mix Ratio is 1A: 2B by volume (62A:100B by weight). Pot life is 10 minutes at room temperature depending on mass. Demold time (can be handled) is about 90 minutes at room temperature depending on mass. Full cure; 24 hours at room temperature. Cure time can be accelerated by applying heat.
Mixed material holds a vertical surface without sagging and cures to a strong, durable and lightweight plastic. Liquid material can be pigmented with So-Strong™ color tints from Smooth-On. This plastic can be used for creating themed environments or special effects, used as a “mother mold” material to reinforce rubber molds and a variety of other applications. This plastic is also a powerful adhesive and can be used as a repair material for a variety of industrial applications. Cured plastic can be sanded, machined and painted with acrylic enamel paints.