The industry’s Number One sealant Tec 7 is the sealant chosen by professional builders and DIY users alike. It is a hybrid polymer product for flexible bonding and sealing. Tec7 can seal, mount and bond all common building materials – even under water, eliminating the wait or need for damp or wet surfaces to dry. Tec 7 can do the job. Tec 7 is the high-tech solution to all your mounting and sealing problems. Adheres to both wet and dry substrates. High UV and fungus resistance.