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Patented clean 'n Friendly™ formulation contains no oils, asbestos or silicon dioxide
Will not shrink, crack or crumble
Can be used on oil, gas, coal and wood burning heating
Freeze point below +10 deg F for uncured material
Meets or exceeds OSHA requirement for minimal silica content
Hercules® high-heat furnace cement is a ready-to-use, air-setting, high-temperature refractory and retort cement for mortar facing, caulking or coating. Adheres to most building materials and when cured makes a positive non-porous, fireproof, acid proof seal that will not crack or crumble. Plumbers have come to trust the Hercules® offering to provide the highest quality of plumbing products.
HERCULES® 35515 High Heat Furnace Cement, 0.5 gal, Paste, Tan