Willseal® 250-B 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. The pre-compressed foam core is saturated with a hydrophobic acrylic emulsion and coated with a fuel-resistant silicone sealant, allowing it to provide an optimal primary seal that is waterproof to rain and snow at the surface level. Willseal® 250-B is specifically designed to provide a maximum seal in structures with shear and rapid movement in joints from ½” to 4”.
