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All Categories > Fire Protection Products > STI Spec Seal > SSM Firestop Mortar  
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SSM Firestop Mortar

SpecSeal® Firestop Mortar is an economical, light-weight portland cement-based firestop product. This passive (non-intumescent) material utilizes a combination of heat sinking and insulating properties to provide an extremely high level of fire resistance. SpecSeal® Firestop Mortar mixes with water to form a non shrinking, high yield mortar that may be applied by pouring, pumping, or troweling. Its low density and light weight means that less forming as well as less forming support is required. Its low density also makes re-penetration for retrofitting a simple task. SpecSeal® Firestop Mortar is designed to dry quickly and will not crack or spall due to freezing or changes in temperature. Its adhesion is due to a chemical bond thus most installations require little or no mechanical anchoring.

Item #

Product Name


Unit Quantity


SSMORTAR.22P SSM Firestop Mortar 22 lb Pail Per Pail 24 lbs. Per Pail
SSMORTAR.22B SSM Firestop Mortar 22 lb Bag Per Bag 22 lbs. Per Bag


SSM Firestop Mortar Data Sheet

SSM Firestop Mortar MSDS