Raychem Heat-Shrinkable Cable-Entry Seals (CESs) are designed to provide a watertight, fume-tight seal where cables enter connection boxes, bulkheads, or other enclosures. These seals come in standard and threaded types, utilizing a three-part assembly or a one-part assembly with a tapered national pipe thread (NPT). The factory-applied adhesive ensures a secure seal to wire and cable jackets, and additional sealants may be required for armored cables. Installation involves tightening a nut and shrinking the component with heat, creating a durable and reliable seal.