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3-Piece KO Seal with Rubber Gasket: 2" Plug- Weatherproof Enclosure Seal

A Three Piece KO Seal with Rubber Gasket is the reliable solution for closing unused knockouts in electrical boxes and metal enclosures. Designed for professional electricians and DIY installers alike, this oil-tight knockout plug provides a secure seal that keeps out dust, dirt, debris, and moisture. The rubber gasket ensures a tight, weather-resistant fit, making it ideal for both indoor and outdoor applications.

KO seals (also called knockout plugs) are required to meet code compliance whenever unused openings are present. This 3-piece design with gasket and 2" diameter offers superior protection, prevents pest entry, and delivers a clean, finished look to any electrical installation. Commonly used in junction boxes, panels, and conduit enclosures, this knockout seal is built for durability and long-lasting performance.

✅ Prevents dust, debris & pests from entering
✅ Rubber gasket for oil-tight, weatherproof sealing
✅ Meets electrical code compliance for unused knockouts
✅ Quick installation in panels, boxes & enclosures
✅ Clean, professional appearance

Whether you’re working on a residential project, commercial panel, or industrial enclosure, this KO Seal with Rubber Gasket ensures safety, compliance, and peace of mind.