Weld Bungs

M18x1.5 O2 bungs and hex/allen plugs in stainless steel and aluminum, including straight and 45° saddled styles for a cleaner weld-in fit on round tubing.

Shop Weld Bungs

• Saddled 304SS O2 Bung M18x1.5
• 45° Saddled 304SS O2 Bung M18x1.5
• Aluminum O2 Bung M18x1.5
• M18 304SS Flanged Saddle Bung
• M18x1.5 19mm Wrench Hex Plug
• M18x1.5 10mm Allen Key Plug

Frequently Asked Questions

What's a "saddled" bung?

A saddled bung is pre-contoured to match the curve of round tubing for a tighter, cleaner weld versus a flat-bottom bung.

Stainless steel or aluminum?

Stainless steel suits exhaust-side welding into steel tubing. Aluminum is for aluminum piping and lower-heat applications.