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Username Password Keep me logged in Sealant Engineering Associated Lines An Association of Distributors and Manufacturers Serving the Construction Industry with Waterproofing Products Sealant Engineering and Associated Lines SEAL is a notforprofit membership organization consisting of leading distributors and manufacturers in the sealant and waterproofing industry. It provides an educational forum for members to share knowledge in the application design distribution and manufacture of sealant and waterproofing products. Members participating in SEAL programs have an opportunity unlike any other to exchange ideas learn about new trends understand the current state of the industry and network with peers. The Benefits of Membership SEAL holds two meetings annually.