There is a stain on the forms. It took two more cycles of unpigmented concrete to remove the stain. The blue color was very soft.
Rutland Stove Gasket Cement Cartridge
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π₯ Long-lasting and Versatile Rutland Furnace Cement 16 Black: Ideal for All High-Heat Applications
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Castable Refractory Cement by Rutland Products
3 Review