Product Type |
|
|
Mixed Viscosity | 3,000 cps | 21,000 cps |
Mix Ratio By Volume | 2A:1B | N/A (gram scale required) |
Pot Life | 20 minutes | 60 minutes |
Cure Time | 48 hours | 24 hours |
Shore A Hardness | 90 | 36 |
Color | Clear Amber | Blue |
Tensile Strength | 2,000 psi | 550 psi |
100% Modulus | 640 psi | 180 psi |
PMC™-790 | Smooth‑Sil™ 936 | |
---|---|---|
Product Type |
|
|
Mixed Viscosity | 3,000 cps | 21,000 cps |
Mix Ratio By Volume | 2A:1B | — |
Mix Ratio By Weight | 2A:1B | 100A:10B |
Pot Life | 20 minutes | 60 minutes |
Cure Time | 48 hours | 24 hours |
Shore A Hardness | 90 | 36 |
Specific Gravity | 1.07 g/cc | 1.21 g/cc |
Specific Volume | 25.9 cu. in./lb. | 22.9 cu. in./lb. |
Color | Clear Amber | Blue |
Die B Tear Strength | — | 110 pli |
Die C Tear Strength | 300 pli | — |
Tensile Strength | 2,000 psi | 550 psi |
Elongation @ Break | 550 % | 500 % |
100% Modulus | 640 psi | 180 psi |
Shrinkage | <.001 in. / in. | <0.001 in. / in. |
Useful Temperature (min) | — | -65 °F |
Useful Temperature (max) | — | 450 °F |
PMC™-790 is a Shore 90A industrial urethane rubber compound designed to meet the most stringent requirements of industrial production applications. It is a very hard rubber that offers superior tear and tensile strength as well as impact and abrasion resistance.
Smooth-Sil™ Platinum Silicones cure at room temperature with negligible shrinkage. With different hardnesses to choose from, Smooth-Sil™ products offer tremendous versatility and are suitable for making production molds of any configuration, large or small. These silicones exhibit good chemical, abrasion and heat resistance. Materials such as plasters, concrete, wax, low-melt metal alloys or resins (urethane, epoxy or polyester) can then be cast into these silicone rubbers without a release agent.
Smooth-Sil™ 936 is a lower viscosity platinum silicone rubber (21,000 cps). It is easier to mix, vacuum degas and pour. Smooth-Sil™ Platinum Silicones are used for rapid prototyping, wax casting (foundries and candle makers), architectural restoration and for casting concrete.