Boiler weld powder

Does boiler stop leak work?
It is often suggested by plumbers and even national boiler maintenance companies as a cheap and easy fix.
The only thing is, if the sealant does work, it tends to be a temporary fix.
It's a bit like a sticking plaster, that will come off in the future and so the leak comes back..
How does boiler stop leak work?
Boiler liquid combines instantly with water in the boiler.
As the water leaks through the crack, it is vaporized and the oxygen in the air transforms the boiler liquid into a strong, solid substance.
The heat generated by the boiler further hardens the seal..
For low-pressure steam and hot water boilers including all one or two pipe house-heating systems, vapor and vacuum systems: Make sure water level is below product addition point.
Remove safety valve on top of boiler.
Pour in Hercules boiler liquid through the safety valve opening.
Partly fill boiler.
Fire to normal operating temperature.
Remove safety plug or fitting, depending on type of boiler, and pour into opening 1 to 2 quarts of boiler liquid.
Close opening and fill system gradually, maintaining heat until circulation is complete and all leaks have stopped.

When PurePro's Boiler Weld Powder or Boiler Weld Liquid is added to the boiler water, it rapidly seeks out the leak, fills the crack and then hardens to seal the opening and stop the leak. PurePro's Boiler Weld Powder or Boiler Weld Liquid will not affect existing seals in the system and can be left in the system.

Boiler Cleaners Chemicals, Treatments, Procedure

The followoing instructions from Fernox™ describing flushing a heating system before installing a new boiler can be appropriate as well if a boiler such as on a steam system has a high level of sediment.
1) Prior to cleaning and flushing, use the enclosed pH test strips and color coded chart to measure the initial pH of the system water as a refere.

Does boiling Weld powder affect seals?

Quoting:

PurePro’s Boiler Weld Powder or Boiler Weld Liquid will not affect existing seals in the system and can be left in the system.
For small openings or when location of leak is unknown, use Boiler Weld Liquid.
The liquid product MSDS indicates that the components are sodium silicate, morpholine, and clarified quebracho.

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How do you use boiler liquid?

Pour in boiler liquid through the pump, injector, feed water or any convenient way.
This liquid can be diluted with hot water to make it easier to use.
The objective is to get the liquid into the boiler the simplest and quickest way.
Use one part boiler liquid to 100 to 200 parts water according to the size of the leak.

How does powdered Stop Leak work?

Powdered stop-leak quickly finds and seals trouble spots on cracked steam or hot water heating boilers.
Forms a tough seal that expands and contracts with boiler metal.
Resists high pressure and temperature.
Once set, seal will not be dislodged by boiler cleaners.

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What is a steam boiler seal?

Prevents steam boiler surging and will not clog or coat submerged hot water heating coils, controls, vents or valves.
Makes a strong, lasting repair on difficult leaks in steam boilers.
Tough seal expands and contracts with heat, resists pressure, and is not affected by boiler cleaners.
Will not cause priming or foaming.