USG Hydro-Stone® Gypsum Cement

Exceptionally strong gypsum cement designed for stretch-press dies and producing cope-and-drag equipment.

*Produces high-quality, indoor novelty and statuary castings that require extremely hard surfaces and superior reproduction of fine detail.

Superior expansion vs. USG Hydrocal® A-11 or B-11 gypsum cements.

*High water absorption resistance.

Customer Service Center
1-800-950-3839
7 a.m. - 6 p.m. CT, Mon - Fri

USG4YOU Tech Support
1-800-USG4YOU (1-800-874-4968)
7:30 a.m. - 4 p.m. CT, Mon - Fri

Email USG Technical Support

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features and benefits

USG Hydro-Stone® Gypsum Cement is especially suitable where high strength and resistance to water absorption are necessary. It is ideal for applications in both the tooling & prototyping and art & statuary categories.

USG Hydro-Stone® Gypsum Cement — For Tooling & Prototyping

USG Hydro-Stone® Gypsum Cement is ideal for stretch-press dies where extreme surface hardness is required. Offering greater expansion than USG Hydrocal® A-11 or B-11 gypsum cements, USG Hydro-Stone® Gypsum Cement:

  • Features a heavy, syrupy consistency, ideal for pouring into solid models or patterns (and making it ideal for filling multiple molds simultaneously)
  • Adapts to most flexible moulding compounds, due to its high absorption resistance
  • Sets in 17-20 minutes, after machine mixing
  • Requires 32 parts water by weight per 100 parts plaster.

NOTE — For best storage results, keep indoors in a dry, stable environment, away from drafts. Do not stack more than two pallets high.

USG Hydro-Stone® Gypsum Cement — For Art & Statuary

One of the hardest and strongest USG Hydrocal® products, USG Hydro-Stone® Gypsum Cement is used in the fabrication of high-quality art novelty and statuary castings. Offering excellent paintability, USG Hydro-Stone® Gypsum Cement:

  • Can duplicate extremely fine details
  • Works well in plaster and most flexible moulding compounds
  • Is self-leveling, with low viscosity
  • Provides fast set time for quick mold turns

Customer Service Center
1-800-950-3839
7 a.m. - 6 p.m. CT, Mon - Fri

USG4YOU Tech Support
1-800-USG4YOU (1-800-874-4968)
7:30 a.m. - 4 p.m. CT, Mon - Fri

Email USG Technical Support

Design & Specification
Assistance
Find your local architectural representative

Frequently Asked Questions