323/02 is a two-part, aluminum–filled polyurethane elastomer sealant manufactured by Weco. Designed for both indoor and outdoor use, the sealant is formulated to form strong bonds between aluminum and other metals, including steel, galvanized steel, high-density polyethylene, polypropylene, vinyl, and other surfaces. The sealant cures at room temperature and is designed to provide a weather-resistant, permanent bond that prevents rust, corrosion, and other types of damage. It is also UL listed, making it suitable for use in many industrial, OEM, and commercial applications.