What sealant to use

tom_11

One a WeilMcLain 368st boiler on the burner mounting plate, what the best sealant to usewhen putting it back on the boiler. Is 500degree silicone good for this purpose. thanks

Al Letellier_9

sealant

Your verbage makes it a little unclear as to what you're asking, but if I understand correctly, you want a sealant to remount the burner to the mounting plate? If so,don't use silicone, buy a new burner gasket. You may never get the burner back off. No sealant is necessary between the gasket and the plate, unless you use never-seize, which will allow easy removal and replacement of the gasket.

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tom_11

sealant

Sorry about the info ,i was trying to say was,the mounting plate back on the boiler,i was going to vacuum the chamber. Thanks tom

Al Letellier_9

mopnting plate

If you are removing the burner "door" to clean the combustion chamber, you may need to replace the gasket if it rips when you remove it. With the newer Gold boilers, we use never sieze on the door gasket. Haven't had to replace one yet. If the gasket is OK, use some graphite based never seize...great stuff. If the gasket ripped, use burner rope, set in the groove with hi-temp silicone,and then use the never-seize.

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tom_11

Sealant

Al Thanks for the info. Tom

[Deleted User]

an adhesive known in the solid fuel trade as Waterglas

is to be preferred over any silicone sealant for your rope gasket. The wood stove trade is the best place to find a replacement gasket if your local manufacturer's rep cannot get you some. The woodies sell it off of a bulk roll.