NPT Weld Bung (Steel)

Weld a tapered port exactly where the system needs one.

Fabrication means creating ports where none existed. The Finish Line Factory NPT Weld Bung (Steel) is steel parent stock machined into a female NPT bung in 1/2" NPT, 1/4" NPT, 1/8" NPT, 3/8" NPT, giving welded assemblies a standard tapered port. Match the steel to your parent metal and weld with confidence.

Benefits

• The port lands exactly where the design wants it, not where an adapter chain ends up
• Steel bung on steel parent metal welds like it belongs
• Fittings thread in square against clean machined threads
• One welded bung replaces a tower of adapters at the vessel wall

Features

• Steel construction for welding to steel exhaust and chassis work
• Female NPT sizes: 1/2" NPT, 1/4" NPT, 1/8" NPT, 3/8" NPT
• Tapered thread sealing with sealant
• For fuel, oil, water, and air vessel plumbing
• Sold individually

The Details

Weld bungs live or die on material match: steel to steel, stainless to stainless, aluminum to aluminum, because dissimilar welds crack under thermal cycling. Tapered ports welded into place then get standard NPT practice: sealant on the male fitting, off the lead thread. Weld in stages on thin walls, chase threads after cooling, and pressure-test before the system sees service.

Kit Includes

• 1x NPT Weld Bung (Steel) (size per your selection)

Applications

• Sizes: 1/2" NPT, 1/4" NPT, 1/8" NPT, 3/8" NPT
• Common uses: welded gauge and sender ports, drain and feed ports on tanks and pans
• Weld to steel exhaust and chassis work