Southwire 3″ Oil-Tight Screw Type Knockout Seal

Seal unused electrical box and enclosure openings securely with the Southwire 3″ Oil-Tight Screw Type Knockout Seal. Designed for professional electrical and industrial applications, this knockout seal provides a dependable method for closing unused 3-inch conduit knockouts while helping maintain enclosure integrity and environmental protection.

Constructed from durable metal for long-term reliability, this oil-tight screw type design helps protect enclosures against dust, dirt, oil, and moisture infiltration in demanding environments. The secure screw-mounted installation ensures a tight, stable fit that resists loosening over time, making it ideal for industrial control panels, junction boxes, switchgear, and electrical enclosures.

Engineered for code-conscious installations, this knockout seal helps preserve enclosure ratings while maintaining a clean, professional appearance. It is suitable for commercial, industrial, utility, and OEM applications where unused openings must be safely sealed and protected.

Key Features:

• Designed to seal unused 3″ conduit knockout openings
• Oil-tight screw type design for secure enclosure protection
• Helps guard against dust, dirt, oil, and moisture infiltration
• Durable metal construction for long-term reliability
• Secure screw-mounted installation resists loosening
• Ideal for electrical enclosures, junction boxes, and control panels
• Supports clean, professional, and code-conscious installations
• Suitable for industrial, commercial, and utility environments

Complete your enclosure installation with the Southwire 3″ Oil-Tight Screw Type Knockout Seal. Order today for a durable, secure sealing solution built for demanding electrical applications.