Sealants are formulated primarily to seal and protect rather than create strong bonds, even though most have some bond strength to adhere to the surfaces to which they are applied. Sealants are created to resist water or moisture, temperature, sunlight and other environmental conditions. Adhesives/Sealants are special, single component sealants engineered for maximum adhesive power. Though less powerful than true structural adhesives, these products are recommended wherever high levels of flexibility are required. Chemical Concepts carries a variety of sealants from brands such as Sika, Chem-Set and many more.