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PMC®-744 Technical Specifications

Polyurethane Rubber Compound

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All Technical Data

Product Type
  • Urethane Rubber
Mixed Viscosity3,400 cps
Mix Ratio By Volume2A:1B
Mix Ratio By Weight2A:1B
Pot Life15 minutes
Cure Time16 hours
Shore A Hardness44
Specific Gravity1.01 g/cc
Specific Volume27.5 cu. in./lb.
Die C Tear Strength90 pli
Tensile Strength300 psi
Elongation @ Break400 %
100% Modulus90 psi
Shrinkage< .001 in. / in.

Product Description


PMC®-744 has been used for years by mold making professionals to cast plaster, concrete, resins, etc. It is excellent for making molds that are strong, durable and dimensionally stable. Low viscosity ensures fine detail reproduction.

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