
STM Universal Weld-On Aluminum 3 Inch Bung & Cap Set
The STM billet 6061 aluminum cap and flange set is the perfect solution for fabricating a 3" canister for reservoir and overflow projects. The 3" diameter flange is an easy fit and weld for any standard 3" .065" tubing.
The billet cap is anodized black with the STM engraved logo and includes the o-ring seal. The cap and flange are USA-made in house at STM!
Vehicle Fitment:
Universal Fabrication Product
• Welding Required
Features & Specs:
• 6061 Billet Aluminum Cap
• STM Engraved Logo
• Hard Anodized Black Cap
• 6061 Aluminum Flange
• O-Ring Included
• USA-Made in house at STM!
Dimensions:
• 3" Bung OD
• 2"-12 UNC Thread
• Cap at Widest Point: 3"
• Overall Height (Bung & Screwed Cap): 1"

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STM Universal Weld-On Aluminum 3 Inch Bung & Cap Set
The STM billet 6061 aluminum cap and flange set is the perfect solution for fabricating a 3" canister for reservoir and overflow projects. The 3" diameter flange is an easy fit and weld for any standard 3" .065" tubing.
The billet cap is anodized black with the STM engraved logo and includes the o-ring seal. The cap and flange are USA-made in house at STM!
Vehicle Fitment:
Universal Fabrication Product
• Welding Required
Features & Specs:
• 6061 Billet Aluminum Cap
• STM Engraved Logo
• Hard Anodized Black Cap
• 6061 Aluminum Flange
• O-Ring Included
• USA-Made in house at STM!
Dimensions:
• 3" Bung OD
• 2"-12 UNC Thread
• Cap at Widest Point: 3"
• Overall Height (Bung & Screwed Cap): 1"

Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The STM billet 6061 aluminum cap and flange set is the perfect solution for fabricating a 3" canister for reservoir and overflow projects. The 3" diameter flange is an easy fit and weld for any standard 3" .065" tubing.
The billet cap is anodized black with the STM engraved logo and includes the o-ring seal. The cap and flange are USA-made in house at STM!
Vehicle Fitment:
Universal Fabrication Product
• Welding Required
Features & Specs:
• 6061 Billet Aluminum Cap
• STM Engraved Logo
• Hard Anodized Black Cap
• 6061 Aluminum Flange
• O-Ring Included
• USA-Made in house at STM!
Dimensions:
• 3" Bung OD
• 2"-12 UNC Thread
• Cap at Widest Point: 3"
• Overall Height (Bung & Screwed Cap): 1"















