Bolt-On Aluminum Filler Cap Bung
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Easy Turn Filler Cap with O-Ring
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NPT Female Weld Bung
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Easy Turn Filler Cap Replacement O-Ring, Buna Material
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1-5/8 Inch Aluminum Bolt-On Bung
1-1/4-12 Straight Thread
4 on 2 in. Bolt Circle
9/16 in. Bung Height
(Replacement base O-Ring is C73-748)
2 Inch Aluminum Bolt-On Bung
1-1/2-12 Straight Thread
4 on 2.25 in. Bolt Circle
9/16 in. Bung Height
(Replacement base O-Ring is C73-768)
2-3/4 Inch Aluminum Bolt-On Bung
2-1/4-10 Straight Thread
5 on 3.125 in. Bolt Circle
11/16 in. Bung Height
(Replacement base O-Ring is C73-789)
Bolt-On Bung
Pro-werks Fill Cap Bungs are available separately without the cap. These bolt-on style aluminum bungs come in several types and sizes, and do not require welding. Select anodized colors are available and include mounting hardware - so you won't need to run all over town looking for it!
Properly sized for the "radially squeezed" O-ring standard of the signature Pro-werks Easy Turn Fill Cap.
The selection of weld-able bungs is also available; including several different heights in your choice of Steel, Aluminum or Stainless steel materials.
Note: Welding should always be performed by a qualified welder.
Great caps. Great colors.
These bungs utilize the popular non-vented Easy Turn Fill Caps that are available variety of Pro-Werks Brilliance anodized colors or beautifully Micro-polished aluminum finish - the finishes are impeccable.
The right size matters.
Finish Your Tank
We also offer a full line of weld-in plumbing bungs to complete your tank project.
Click the images below to view all the options.
FAQ
Q: What should I use to lubricate the Buna O-ring?
A: Applied periodically, a light coating of Dielectric grease has proven to work well as an O-ring lubricant.