Brass Heat Exchanger Tube Plug, 3/4 in. OD, 15 to 20 Tube Wall

Tapered Heat Exchanger/Boiler Tube Plugs, and Tools - Tupros, LLC, Crystal Lake, IL 60014

Compression Cap End and Brass/ 316 Stainless Steel Hydraulic Plugs

Tube plugs: How to plug an air cooled heat exchanger - BIC Magazine

Titanium Pipe Fittings Manufacturers, Suppliers, Ti Fitting Factory

WiseWater 4 Loop PEX/Radiant Manifold, 1/2 In and 3/4 In Compatible Outlets, Up to 1.4 GPM Flow Valve for Hydronic Radiant Floor Heating(1/2 connectors included)

Utilities – Elliott Tool Technologies

RIDGID 3/16 in. to 1-1/8 in. Model 15 Screw Feed Copper Pipe & Aluminum Tubing Cutter w/ Fold Away Reamer + Spare Wheel 32920 - The Home Depot

Metal Tapered Tube Plugs Located in Texas and Louisana

Heat Exchanger One-Piece Tube Plugs

HOME-FLEX 3/4 in. CSST x 3/4 in. MIPT Brass Male Adapter 11-436-007 - The Home Depot

Proline Series 3/8-in x 3/8-in Barbed Elbow Fitting in the Brass Fittings department at

Heat Exchanger One-Piece Tube Plugs