M4644 Silicone Rubber Expand

M4644 Silicone Rubber

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Availability: In Stock

$51.70

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M4644 is a high performance silicone mould-making compound that is suitable for reproducing models with undercuts in polyurethane or epoxy resins.

M4644 is also a Food Grade Silicone Rubber

Recommended for: Food Grade, Concrete, Plaster, Epoxy, Polyurethane
Potlife & Demould: Work time - 90 mins / Demould time - 12 hrs
Hardness & Type: Shore A40 +/-2 Silicone Elastomer, 50000cps



Pourable, addition-curing, two component silicone rubber that cures at room temperature.

  • Good Flow
  • Medium Shore A Hardness (approx 40)
  • Fast non-shrink cure which can be accelerated considerably by the application of heat
  • Good transparency of the cured rubber
  • High tear strength
  • Outstanding resistance to casting resins, particularly polyurethanes and epoxies
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