Ag Manufacturing 314 Steel Knockout Seal 1.5 in

Product Description

The AG MANUFACTURING 314 is a three-piece steel knockout seal designed to close unused 1.5-inch trade-size openings in metallic enclosures, electrical panels, and junction boxes. The assembly consists of a sealing ring, a locknut, and a bushing that work together to form a secure, code-compliant closure. Electricians and panel installers use this seal to block unoccupied knockouts, preventing debris ingress and maintaining the integrity of the enclosure. The all-steel construction provides durability appropriate for standard electrical installation environments.

This knockout seal is used in residential and commercial electrical work wherever a metallic enclosure has an unused 1.5-inch knockout that must be closed. Typical applications include load centers, junction boxes, pull boxes, and auxiliary panels. It is installed during new construction, renovation work, and service calls when conduit or cable entries are relocated or consolidated.

Key Features

• Three-piece assembly: sealing ring, locknut, and bushing for a complete closure
• Fits 1.5-inch trade-size knockout openings in metallic enclosures
• Steel construction for durability in standard electrical environments
• Seals unused knockouts to prevent debris ingress and maintain enclosure integrity

Compatibility

Designed as an OEM-style replacement and standard-fit seal for 1.5-inch trade-size knockouts in metallic electrical enclosures, panels, and junction boxes.

Installation Notes

Installation is performed by a licensed electrician in accordance with NEC requirements for closing unused openings in electrical enclosures. De-energize the panel or enclosure completely before beginning work. Insert the seal components through the knockout opening and tighten the locknut by hand, then snug with pliers — do not overtorque steel hardware. Verify the closure is flush and secure before restoring power.

Technical Specifications

• Trade Size: 1.5 inches
• Material: Steel
• Pieces: 3

Standard Information

• Brand: AG MANUFACTURING
• Manufacturer Part Number: 314