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Aluminum Weld-In Cap & Bung Assembly

Name: ct100_mainslot_partName
Brand: Pro-Werks
Price: partTablePrice USD
Availability: in stock

Choose your size. Choose your color.

Aluminum Weld-In Cap & Bung Assembly
Cap Size	Black	Red	Blue	Silver	Polished
1-5/8" Cap	C73-735	C73-736	C73-737	C73-738	C73-739
2" Cap	C73-755	C73-756	C73-757	C73-758	C73-759
2-3/4" Cap	C73-775	C73-776	C73-777	C73-778	C73-779
4-1/4" Cap	C74-775	C74-776	C74-777	C74-778	C74-779

Image	Part Number	Description
	C73-735	1-5/8 in. BLACK FILL CAP WITH ALUMINUM WELD BUNG 1-1/4-12 Straight Thread 1-5/8 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)
	C73-736	1-5/8 in. RED FILL CAP WITH ALUMINUM WELD BUNG 1-1/4-12 Straight Thread 1-5/8 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)
	C73-737	1-5/8 in. BLUE FILL CAP WITH ALUMINUM WELD BUNG 1-1/4-12 Straight Thread 1-5/8 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)
	C73-738	1-5/8 in. SILVER FILL CAP WITH ALUMINUM WELD BUNG 1-1/4-12 Straight Thread 1-5/8 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)
	C73-739	1-5/8 in. POLISHED FILL CAP WITH ALUMINUM WELD BUNG 1-1/4-12 Straight Thread 1-5/8 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)
	C73-755	2 in. BLACK FILL CAP WITH ALUMINUM WELD BUNG 1-1/2-12 Straight Thread 2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)
	C73-756	2 in. RED FILL CAP WITH ALUMINUM WELD BUNG 1-1/2-12 Straight Thread 2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)
	C73-757	2 in. BLUE FILL CAP WITH ALUMINUM WELD BUNG 1-1/2-12 Straight Thread 2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)
	C73-759	2 in. POLISHED FILL CAP WITH ALUMINUM WELD BUNG 1-1/2-12 Straight Thread 2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)
	C73-775	2-3/4 in. BLACK FILL CAP WITH ALUMINUM WELD BUNG 2-1/4-10 Straight Thread 2-3/4 in. Outside Diameter Bung 5/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-788-A)
	C73-776	2-3/4 in. RED FILL CAP WITH ALUMINUM WELD BUNG 2-1/4-10 Straight Thread 2-3/4 in. Outside Diameter Bung 5/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-788-A)
	C73-777	2-3/4 in. BLUE FILL CAP WITH ALUMINUM WELD BUNG 2-1/4-10 Straight Thread 2-3/4 in. Outside Diameter Bung 5/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-788-A)
	C73-778	2-3/4 in. SILVER FILL CAP WITH ALUMINUM WELD BUNG 2-1/4-10 Straight Thread 2-3/4 in. Outside Diameter Bung 5/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-788-A)
	C73-779	2-3/4 in. POLISHED FILL CAP WITH ALUMINUM WELD BUNG 2-1/4-10 Straight Thread 2-3/4 in. Outside Diameter Bung 5/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-788-A)
	C74-775	4-1/4 in. BLACK FILL CAP WITH ALUMINUM WELD BUNG 3-3/4-8 Straight Thread 4-3/8 in. Outside Diameter Bung 7/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C74-788-A)
	C74-776	4-1/4 in. RED FILL CAP WITH ALUMINUM WELD BUNG 3-3/4-8 Straight Thread 4-3/8 in. Outside Diameter Bung 7/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C74-788-A)
	C74-777	4-1/4 in. BLUE FILL CAP WITH ALUMINUM WELD BUNG 3-3/4-8 Straight Thread 4-3/8 in. Outside Diameter Bung 7/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C74-788-A)
	C74-778	4-1/4 in. SILVER FILL CAP WITH ALUMINUM WELD BUNG 3-3/4-8 Straight Thread 4-3/8 in. Outside Diameter Bung 7/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C74-788-A)
	C74-779	4-1/4 in. POLISHED FILL CAP WITH ALUMINUM WELD BUNG 3-3/4-8 Straight Thread 4-3/8 in. Outside Diameter Bung 7/8 in. Bung Height Made in the USA (Cap Replacement O-Ring is C74-788-A)

Cap Assembly with Aluminum Weld-In Bung

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.

To compliment the color coordination of your project, the caps are finished off in Pro-Werks Brilliance anodized colors in your choice of black, red, blue, silver, or beautifully Micro-polished aluminum.

The right size matters.

Easy Turn Fill Caps come in many sizes and are packaged as complete assemblies with your choice of one of the many versatile mounting options, or each component is also available separately.

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.

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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.