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ALWA SIL SH22 & SH33

ALWA SIL SH22 & SH33
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ALWA SIL SH22 & SH33

Product catalog summary
Overview: Silicone rubber ALWA SIL SH 22 and SH 33 are high-performance silicone impression materials known for their excellent mechanical properties and ease of handling. These materials are two-component systems that cure at room temperature, forming a low-viscosity liquid that crosslinks into a durable, rubber-elastic material without generating exothermic heat.
Applications:
  • Flexible casting moulds
  • Copy moulds
  • Moulds with undercuts
  • Polyurethane casting moulds
  • Concrete casting moulds
Technical Specifications:
CharacteristicSH22SH33
Silicone typeAdditionAddition
Hardness (shore A)~ 21 – 23~ 30 – 34
Mixing ratio (%)100 : 100100 : 100
ColourBlueTranslucent, red, blue, green
Pot life at 22 °C – 24 °C (min.)~ 18 – 25~ 20 – 25
Time to demoulding at 24 °C (hrs.)~ 2 – 3~ 3 – 4
Viscosity (mPa s)~ 3,500 ± 1,000~ 4,500 ± 1,000
Tear-strength (kgf/cm)~ 18 – 31~ 11 - 17
Tensile strength (kgf/cm²)~ 45 – 75~ 60 - 90
Elongation (%)≥ 400≥ 350
Shrinkage (%)≤ 0.1≤ 0.3
Temperature resistance (°C)~ 220~ 220
Additional Information: By adding 1 – 3% thixotropic agent per component, a spreadable mixture can be achieved, enhancing the material's application versatility.
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Catalog excerpts

ALWA SIL SH22 & SH33-1

ADDITION-CURING SILICONE RUBBERS ALWA SIL SH22 & SH33 Silicone rubber ALWA SIL SH 22 and SH 33 are silicone impression materials. These materials have extremely high mechanical values. In addition, they are very fast to handle and very easy to handle as well. The two-component silicone rubbers cure at room temperature. After mixing the two components, a low-viscosity liquid develops, which crosslinks to a resistant and rubber elastic material. During the crosslinking, no exothermic heat is developed. When 1 - 3 % thixotropic agent is added per component, a spreadable mixture is obtained. Area of application • Flexible casting moulds • Copy moulds • Moulds with undercuts • Polyurethane casting moulds • Concrete casting moulds

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