i would really like to see some more pictures of this setup... specifically what it looks like with the thermostat removed. You want to make sure that the threaded hole is even countersunk to accept the oring rather than just smashing it between 2 flat surfaces. If its not countersunk, you want to use a bonded sealing washer to seal that union.
Its hard to say from the pictures... but it really just looks like that oring is totally smashed in there, as if there is no counter bore for it to seal up into.
|