Heavy Duty Knockout Seal Cover One Half Inch Steel Gray Painted Gasketed Oil Tight Conduit Plug With Weld Stud Wing Nut Back Plate A Solid Workhorse For Electrical Wiring Projects Done Right

Sealed One Half Inch Steel Conduit Hole Cover Plug
✔️ Gasketed Oil-Tight Back Plate With Weld Stud & Wing Nut

This gasketed hole seal cover plugs unused electrical conduit openings to keep dirt, moisture, and oil out of your run. Install it on residential or commercial wiring boxes where you need a dependable, oil-tight closure.

✅ ANSI-61 gray painted steel construction resists rust
✅ Fitted rubber gasket creates an oil-tight environmental seal
✅ Weld stud mounts fast to metal conduit boxes
✅ Included wing nut locks the assembly securely in place

💡 Why choose a sealed conduit box cover for damp commercial wiring runs?
These fittings work great because they stop grit and grease from eating into your connections.
- High-grade steel plating takes abuse from job site traffic without denting
- Synthetic elastomer pad holds back hydraulic fluid and motor oil under pressure
- Acme thread profile allows you to spin the closure on fast with gloved hands
- Stamped flange base spreads clamping force across thin gauge panels perfectly