UNITED STATES HDW MFG/U S HA KK0295-A 16OZ BLK Furnace Cement, 16 Oz, Black 16OZ, Black, Furnace Cement, Especially Suited For Sealing Metal To Metal Metal To Masonry Joints, Can Be Used On Cast Iron, Steel Or Firebrick, A Creamy Smooth Black Silicate Ceramic Type Cement, Durable As Firebrick When Heat Cured, Withstands Temperatures Up To 1093 Degrees Centimeter (2000 Degrees Fahrenheit). Features This is highly durable This is easy to use This is manufactured in China USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.