Hydrocal White Gypsum Cement, 50lb. bag

Used as capping compound, USG Hydrocal Brand White Gypsum Cement is a good multi-purpose product for people looking to upgrade from a standard plaster product to one that has a higher degree of hardness and impact resistance. Offering twice the compressive strength of plaster, Hydrocal® White Gypsum Cement is especially suitable in thin, delicate sections where high green strength is required.

• Meets ASTM C617
• Offers long workability; setting expansion twice that of molding plaster and pottery plaster
• Has a great value to performance ratio
• Sets 25-35 minutes after machine mixing
• Requires 45 parts water by weight per 100 parts plaster.
• Compressive Strength, One Hour After Set 3000 psi (20.7 MPa)
• Compressive Strength, Dry 6000 psi (41.4 MPa)
• 50lb. bag