Manhole ChimneySeal F-88 from Sauereisen is a chemically resistant, elastomeric lining composed of asphalt-modified urethane. Its fiber reinforcement provides durability, especially with respect to flexural forces. It is formulated to withstand the harsh environment that exists in the chimney sections of manholes, which are regularly exposed to acids, salts and alkalis along with broad temperature ranges and movement due to freeze-thaw cycles or ground shifting. It is a self-priming product easily applied with a gloved hand. It is also solvent-free, making it environmentally friendly. It bonds to steel, brick and concrete, allowing it to seal voids between metal castings, brick, sections of precast concrete or even the entire surface of a manhole chimney. Its elongation allows movement of the chimney section while retaining suitable water-stop capabilities. 412-963-0303; www.sauereisen.co