Does this sound familiar to anyone: G 1/8" fittings on stainless steel pressure gauge manifold (or distribution block). Assembled with Loctite thread sealant.
Stubborn small leaks under high pressure (500 to 1000 bar)
I have assembled and disassembled the damn thing at least five times, washing everything with brake cleaner and ultrasonic cleaner every time.
And yet there is microscopic leak in more than one of the fittings!
Some of them seal ok and but there is always more than one leaker.
Leaks are always really small, like 1 drop of oil in 10 minutes under 1000 bar pressure but they ruin my day totally.
Zinc plating on the pressure gauge fittings?
Air getting mixed in the adhesive because the threaded fittings are on the side of round bar?
Distribution block deforming too much under pressure?
Loctite thread sealant has been 100% fool proof until now for me and now I am stumbled with this stupid pressure manifold.
Stubborn small leaks under high pressure (500 to 1000 bar)
I have assembled and disassembled the damn thing at least five times, washing everything with brake cleaner and ultrasonic cleaner every time.
And yet there is microscopic leak in more than one of the fittings!
Some of them seal ok and but there is always more than one leaker.
Leaks are always really small, like 1 drop of oil in 10 minutes under 1000 bar pressure but they ruin my day totally.
Zinc plating on the pressure gauge fittings?
Air getting mixed in the adhesive because the threaded fittings are on the side of round bar?
Distribution block deforming too much under pressure?
Loctite thread sealant has been 100% fool proof until now for me and now I am stumbled with this stupid pressure manifold.