Hydro-Stone Gypsum Cement

50lb bag

Part: HydStone

Hydro-Stone Gypsum Cement

Hydro-Stone gypsum cement is one of the hardest and strongest gypsum cements.  It has a heavy, syrupy consistency that is ideal for pouring solid models or patterns.  Hydro-Stone also has a low viscosity slurry for filling multiple molds at one time.


Normal Consistency 32lbs. water/100lbs. product (15kg water/45 kg product)
Hand Mix Vicat Set, Target 19-25 minutes
Compressive Strength, One Hour After Set 4000 psi (27.6 MPa)
Compressive Strength, Dry 10,000 psi (68.9 MPa)
Density, Wet 119 lbs./cu. ft (1906 kg/m3)
Density, Dry 108 lbs./cu. ft. (1730 kg/m3)
% Maximum Expansion 0.24%

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