STM Billet Welding Purge Block for 2-Bolt Exhaust Flange

The STM billet purge/clamping block for 2.5" or 3" 2-bolt exhaust flanges allows us to securely bolt a flange and easily evacuate oxygen while welding to ensure a clean, solid weld and prevent warping.

The aluminum block helps draw heat away from the flange while welding and you can bolt the flange securely to the block to prevent warping. Comes with 1/8" NPT threads to accept your purge fittings. These are the same purge blocks our fabricators use and they are made in-house at STM.

Vehicle Fitment:
• For 2-bolt exhaust flanges
• Works with 2.5" and 3" ID flanges

Features & Specs:
• CNC machined 
• 6061 billet aluminum
• Seals off the flange for purging
• Solid surface to hold the flange flat during welding
• Helps reduce warpage when welding
• Aluminum block helps pull heat away from the flange
• 1/8" NPT threads to accept purge fitting of your choice
• Weighs 26.62 ounces

What is Weld Purging?
Weld purging is the process of evacuating oxygen from a pipe, tank or chamber using gas such as argon or nitrogen. This seals off oxygen from entering the weld pool - which can cause poor quality and loss of corrosion resistance.

Purchase Includes:
(1) Purge Block