Description
| Unit Size | Net Weight |
| Gallon Kit | 16 lb |
| Five Gallon Kit | 80 lb |
The PMC-121 Series urethane rubbers feature convenient one-to-one by volume mix ratios. PMC-121/30 Dry and PMC- 121/30 Wet are exceptionally strong and abrasion resistant for soft urethane mold rubbers.
Pick the one best suited for your application. The dry version does not exude oil and can be used for casting waxes, Smooth-On liquid plastics, gypsum plasters and other materials. The wet version exudes oil that aids in demolding hard plasters and concrete. PMC-121/50 is a "wet-only" mold rubber that is long lasting and durable when used in a variety of applications including reproduction of ornamental plaster, precast concrete and ceramic case molds.
Note: "wet" rubber has a higher net shrinkage value vs. "dry " rubber. PMCª 121 Series mold rubbers are easy to mix and pour and are exceptionally strong. They are suited for a variety of applications including making molds to reproduce sculpture and architectural elements, as well as for making special effects, toys and prototypes. These rubbers will meet the stringent demands of production casting of wax, plasters, concrete, resins and epoxies. Vibrant colors can be achieved by adding So-Strongª Color Tints, available from Smooth-On.
Pick the one best suited for your application. The dry version does not exude oil and can be used for casting waxes, Smooth-On liquid plastics, gypsum plasters and other materials. The wet version exudes oil that aids in demolding hard plasters and concrete. PMC-121/50 is a "wet-only" mold rubber that is long lasting and durable when used in a variety of applications including reproduction of ornamental plaster, precast concrete and ceramic case molds.
Note: "wet" rubber has a higher net shrinkage value vs. "dry " rubber. PMCª 121 Series mold rubbers are easy to mix and pour and are exceptionally strong. They are suited for a variety of applications including making molds to reproduce sculpture and architectural elements, as well as for making special effects, toys and prototypes. These rubbers will meet the stringent demands of production casting of wax, plasters, concrete, resins and epoxies. Vibrant colors can be achieved by adding So-Strongª Color Tints, available from Smooth-On.
Properties
Technical Properties
| Mix Ratio by Weight | 1A:1B |
| Mix Ratio by Volume | 1A:1B |
| Pot Life | 30 minutes |
| Cure Time | 16 hours |
| Color | Clear Amber |
| Shore Hardness | 30A |
| Mixed Viscosity | 1,800 cps |
| Shrinkage | < .001 in. / in. |
| Specific Volume | 26.7 cu. in./lb. |
| Specific Gravity | 1.04g/cc |
| Tensile Strength | 400 psi |
| 100% Modulus | 82 psi |
| Elongation @ Break | 1,000% |
| Die C Tear Strength | 75 pli |
Special Order Items
PRODUCT ADVISORY:
The products listed below are currently SPECIAL ORDER items and require pre order.
Lead times may vary - For more information please contact our staff.
700210 - PMC 121-30 WET - Gallon Kit
700240 - PMC 121-30 WET - Five Gallon Kit
The products listed below are currently SPECIAL ORDER items and require pre order.
Lead times may vary - For more information please contact our staff.
700210 - PMC 121-30 WET - Gallon Kit
700240 - PMC 121-30 WET - Five Gallon Kit
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