Your fabricator will appreciate the stepped shoulder at the base of the bung, it serves as a positioning locator. This feature holds the bung in place while welding in a hole of a flat surface, or in the end of tubing when constructing a filler neck extension. This grouping of cap assemblies includes a weld-able aluminum bung.
The step ahead.
The lightweight, non-vented cap features positive grip finger notches that are easy to get a hold of. Prime 6061-T6 billet aluminum is precision CNC machined into a lightweight, attractively designed cap; featuring quick-start coarse threads. Each is supplied standard with a Buna O-ring; positive sealing and "radially squeezed " to hold the cap secure. Check out the entire line up, Billet Aluminum Fill Caps is a Pro-werks specialty.
Great caps. Great colors.
The right size matters.
Be sure to check out the entire line up - Billet aluminum Easy Turn Fill Caps are a Pro-werks specialty. Watch the Video below to learn more !
Proudly made here in the USA.
Note: Welding should always be performed by a qualified welder.
We also offer a full line of weld-in plumbing bungs to complete your tank project.
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