I don't think they seal. The diameter for the 3/8" NPT thread was not sufficient, so they are cut in half. I don't have the right die so I'm SOL and need to look elsewhere for fittings.
High-Quality QiiMii Stainless Steel Sanitary Clamp With Silicone Gasket - 2 Inch, Single Pin Tri Clover Design
16 Review
DIGITEN DC 12V 1/4" Inlet Feed Water Solenoid Valve Quick Connect N/C Normally Closed No Water Pressure
14 Review
1 Inch Beduan Brass Electric Solenoid Valve, 12V Normally Closed Air Valve For Water, Gas, Fuel, And Oil
10 Review
Vacuum cleaner Dreame V9 Global, white
145 Review