Rutland Products Fireplace Mortar Cartridge, 10.3-Ounce, Gray - 63G

This is our original fireplace mortar formulated especially to patch fireplace fireboxes and to bond firebrick to firebrick.Fireplace mortar is a silicate product that when fire cured, sets rock hard - as strong as firebrick itself and withstands 2000° Fahrenheit.Comes in a convenient cartridge for easy repointing of fireplace brick within the firebox.Colors match most mortars.P ASTM E136 and E72.10.3 oz.cartridges.'