Zhermack silicone rubber ZA 43 PU red-brown Shore hardness 43 medium-hard
Zhermack
Zhermack silicone rubber ZA 43 PU red-brown Shore hardness 43 medium-hard Duplicating silicone base
Zhermack silicone rubber ZA 43 PU shore hardness 43
Addition-curing 2-component silicone rubber that vulcanizes at room temperature ( RTV ).
Being remarkably fluid, it is suitable for duplicating models with small undercuts.
Compatibility extends to all plasters, waxes, polyurethane and acrylic plastics.
Zhermack ZA 43 PU is equipped with a shore hardness 43, a silicone rubber that was specially developed for casting polyurethanes, has excellent resistance and anti-adhesion properties.
This means that the cast parts can be released very easily and higher service life of the molds compared to conventional molding or duplicating silicones.
properties and application
• High chemical resistance to aggressive components of some types of resin
• Height tear strength
• High level of fidelity in very small details
• High dimensional stability over a long period of time
• Remarkable resistance to high temperatures and to aging
• Outstanding non-stick effect
• Outstanding resistance to PU casting resin and PU foam
Main areas of application
•Making molds and models because of the remarkable precision in reproduction, high dimensional stability and high mechanical strength
• Art ceramics because of the high dimensional stability, the remarkable fluidity and the good mechanical strength
• Manufacture of molds for concrete casting
• Production of casting molds with PU (polyurethane) casting resin and PU (polyurethane) foam
More product information
Colour: A reddish brown and B white
Mixture: 1:1 by weight
specific gravity: 1.2
Viscosity : 13000 mPas
Mixing time at 23 degrees Celsius 1 minute
processing time at 23 degrees Celsius 18 minutes
Curing time at 23 degrees Celsius 240 minutes
hardness Shore A after 24 hours 43 ± 2
Breaking load: 4.5 ±0.2 N/mm²
Elongation at break: 310%
Tensile strength : (Die B) 6.0 ±1.0 N/mm²
Reproduction Detail: 2 microns
Dimensional change after 24 hours: 0.02%
Mixing time at 23 degrees Celsius: | 1 min |
Mixing ratio: | 1:1 |
Product type: | silicone |
Dimension change in % after 24h: | 0.02 |
Curing time at 23 degrees Celsius: | 240 mins |
Colour: | reddish brown |
breaking load: | 4.5N/mm2 |
Shore hardness: | A43 |
specific weight: | 1.2 |
Viscosity: | 13000 mPas |
Processing time at 23 degrees Celsius: | 18 mins |
Elongation at break (in %): | 310 |
tear strength: | 6.0N/mm2 |
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