Boiler servicing n10
We have a boiler service specialist in n10 that we can call out to you today. Every boiler repair specialist working with us is Gas Safe registered and works to the highest standards set by our company and the industry.
My plumber fitted a new thermocouple to my old Potterton boiler. He smeared some grease like substance to the screw thread end of the thermocouple – what is it, and what does it do.
Thx in advance.
{ 9 comments… read them below or add one }
Most likely a conductive type grease to help with the electrical connection!
Thermocouples work on electricity generated by the heat produced by the pilot light! There should be NO gas at this connection!
If he is using some form of gas sealant it is time to find a new repairman!
It’s a type of thread sealant, there are various types available on the market and commonly used.
There are many types of lubricants used for high temperature applications. Some contain graphite and some teflon or even metal. They are used for anti-seize to prevent the threads from binding to the base metal. This makes removal a whole lot easier.
It is called "Jointing paste" and its used to give a gas tight seal. Much better than PTFE tape. It can also be used on any joints that carry water, like compression fittings.
But for gas, you use Gas jointing paste or PTFE tape for gas.
It’s a sealant.
It sticks around the threads and goes off. Basically it helps prevent leaks from the threaded joint.
Commonly termed "Thread Sealant" available at most hardware store and Lowes
I think I’ve heard it called ‘gunk’ but I’m not sure what it’s for, unless it’s to stop drips.
Its called Plumbers mate and is used to seal joints to prevent leaks
It is called high conductivity compound, used in electrical and electronics, and also in car ignition systems, it can be bought in tubes and unlike normal grease it has special properties that don’t inhibit the electrical conduction.