Carburetor leaking at engine

[reynoldston]

Your engine does not have a needle/seat. It has a diaphram. There is no fuel flow when the motor is not running.
My info. says to use 2 gaskets at the engine and make sure there are 2 bolts holding the carb. to block. I've seen them with only one!

Yes I say fix it right and you are right. The OP was asking what he could use for a sealant.