I've used these on a propane heater and they fit as they should, but with a metal connection not only is tape required but a rubber gasket like the one you have on the female end of a garden shed (although it would be smaller), otherwise you will get a small leak
High-Quality QiiMii Stainless Steel Sanitary Clamp With Silicone Gasket - 2 Inch, Single Pin Tri Clover Design
16 Review
12V Brass Solenoid Valve, 3/4" Electric Air Valve For Water, Air, Gas, Fuel And Oil - Normally Closed By Beduan
10 Review
6 Pack Miahart Adjustable 304 Stainless Steel 4 Inch Hose Clamp Duct 91Mm-114Mm Worm Gear Pipe Clamp For Automotive, Mechanical Agriculture.
18 Review
Vacuum cleaner Dreame V9 Global, white
145 Review