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Steel Weld-In Cap & Bung Assembly

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Steel Weld-In Cap & Bung Assembly
Cap Size	Black	Red	Blue	Silver	Polished
1-5/8" Cap	C73-730	C73-731	C73-732	C73-733	C73-734
2" Cap	C73-750	C73-751	C73-752	C73-753	C73-754
2-3/4" Cap	C73-770	C73-771	C73-772	C73-773	C73-774
4-1/4" Cap	C74-770	C74-771	C74-772	C74-773	C74-774

Image	Part Number	Description	Price	Unit
	C73-730	1-5/8 in. BLACK FILL CAP WITH STEEL WELD BUNG 1-1/4-12 Straight Thread 1-1/2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)	$44.99	Each
	C73-731	1-5/8 in. RED FILL CAP WITH STEEL WELD BUNG 1-1/4-12 Straight Thread 1-1/2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)	$44.99	Each
	C73-732	1-5/8 in. BLUE FILL CAP WITH STEEL WELD BUNG 1-1/4-12 Straight Thread 1-1/2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)	$44.99	Each
	C73-733	1-5/8 in. SILVER FILL CAP WITH STEEL WELD BUNG 1-1/4-12 Straight Thread 1-1/2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)	$44.99	Each
	C73-734	1-5/8 in. POLISHED FILL CAP WITH STEEL WELD BUNG 1-1/4-12 Straight Thread 1-1/2 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-749)	$44.99	Each
	C73-750	2 in. BLACK FILL CAP WITH STEEL WELD BUNG 1-1/2-12 Straight Thread 1-3/4 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)	$48.99	Each
	C73-751	2 in. RED FILL CAP WITH STEEL WELD BUNG 1-1/2-12 Straight Thread 1-3/4 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)	$48.99	Each
	C73-752	2 in. BLUE FILL CAP WITH STEEL WELD BUNG 1-1/2-12 Straight Thread 1-3/4 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)	$48.99	Each
	C73-753	2 in. SILVER FILL CAP WITH STEEL WELD BUNG 1-1/2-12 Straight Thread 1-3/4 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)	$48.99	Each
	C73-754	2 in. POLISHED FILL CAP WITH STEEL WELD BUNG 1-1/2-12 Straight Thread 1-3/4 in. Outside Diameter Bung 1/2 in. Bung Height Made in the USA (Cap Replacement O-Ring is C73-769)	$48.99	Each
	C73-770	2-3/4 in. BLACK FILL CAP WITH STEEL 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)	$57.99	Each
	C73-771	2-3/4 in. RED FILL CAP WITH STEEL 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)	$57.99	Each
	C73-772	2-3/4 in. BLUE FILL CAP WITH STEEL 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)	$57.99	Each
	C73-773	2-3/4 in. SILVER FILL CAP WITH STEEL 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)	$57.99	Each
	C73-774	2-3/4 in. POLISHED FILL CAP WITH STEEL 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)	$57.99	Each
	C74-770	4-1/4 in. BLACK FILL CAP WITH STEEL 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)	$90.99	Each
	C74-771	4-1/4 in. RED FILL CAP WITH STEEL 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)	$90.99	Each
	C74-772	4-1/4 in. BLUE FILL CAP WITH STEEL 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)	$90.99	Each
	C74-773	4-1/4 in. SILVER FILL CAP WITH STEEL 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)	$90.99	Each
	C74-774	4-1/4 in. POLISHED FILL CAP WITH STEEL 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)	$90.99	Each

Cap Assembly with Steel Weld-In Bung

Your fabricator will appreciate the stepped shoulder at the base of the bung, it serves as a positioning locator. This design 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 steel 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.

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.