Weil McLain 383-500-020 Inspection Glass Kit Should I use thread sealant

Should I use thread sealant on the flare end

as well as various high-output water heaters

it will indirectly trip during a phase loss event due to the resulting rapid increase in current draw on the remaining legs

and 3003 series

Weil McLain 383-500-020 Inspection Glass Kit Should I use thread sealantFor high efficiency boiler maintenance, the Weil McLain 383 500 020 Inspection Glass Kit is the essential OEM solution for monitoring combustion and flame quality in Ultra Series 1 and 2 boilers. This complete assembly is critical for identifying potential burner issues or soot buildup without compromising the sealed combustion environment. As a professional grade boiler sight glass replacement, it includes the high temperature borosilicate glass, a