Effective techniques for sealing cable entry points involve using high-quality sealants, employing grommets or cable glands, and ensuring a clean and secure installation. What is a Cable Entry Seal? A cable entry seal is a specialized fitting that creates a secure, watertight, and dustproof barrier where cables pass through a. Seal an electrical enclosure by matching the IP/NEMA rating, using the right gasket, cable glands, sealant, and inspection steps to block dust, water, and corrosion. Sealing an electrical enclosure is not just about adding silicone around the box. A reliable seal protects the door, gasket, cable. Roxtec seals for multi-hazard protection of electrical substations. Just peel off layers until the module fits.