Willseal 250B is a pre-compressed, self-expanding foam joint sealant with a highway grade silicone coating engineered to perform in primary horizontal applications such as road and bridge joints and airport runways. Willseal 250B, with its silicone cap, provides a primary seal, and is waterproof to rain and snow, making it an optimal primary sealant. Willseal 250B is specifically designed to provide a maximum seal in structures with shear and rapid movement. Willseal 250B is manufactured at the highest level of quality and specially engineered for maximum performance in joints from 1/2" - 6".
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