Gasket

Sealing in a boiler ensures the proper functioning of each spare part and avoids energy overconsumption.
In heating, gaskets are placed on the boiler spare parts related to fuel, that is, on the gas piping close to the gas block, the heat exchanger, or the boiler burner. Thanks to the o-ring gasket, gas does not escape into the rest of the boiler or even into the house, which could make your home unsafe.
In the hydraulic part, sealing must be done to prevent water leaks inside the boiler at both the plate exchanger (that is, the sanitary exchanger) and the 3-way valve located with the hydraulic block.
To prevent thermal loss, in addition to gaskets in the boiler, thermal insulation plates are added at the heat exchanger level (what is called the hot skirt in the heating field) and at the burner entrance (what is called the burner gasket).