+Sealant is a substance used to block the passage of fluids or gases through openings. It fills gaps, prevents leaks, and often provides [Adhesion](/wiki/adhesion) between components. Common types include [Caulk](/wiki/caulk) and compounds designed for waterproofing.
+## See also
+- [Adhesive](/wiki/adhesive)
+- [Gasket](/wiki/gasket)
+- [Waterproofing](/wiki/waterproofing)
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