ANYONE,

Regarding installing a new gas tank sending unit, the new rubber O ring/gasket that goes in the circular groove in the top of the tank and is right under the round silver top of the sending unit is MUCH thicker than my old one. The diameter is fine. The seller said both the O ring and the metal lock ring are the correct ones that come with the new sending unit. Problem is, I can't compress the thick O ring enough to turn the metal lock ring in place to secure it.

How do I install/compress the new "fatter/thicker" O ring in my new tank? I used petroleum jelly around the O ring bottom as instructed by the sending unit seller, and even resorted to boiling it in water trying to make it more pliable. I used a large 1-1/4 inch socket from my socket set to press the round metal top of the unit down on the O ring with all my might (and weight) but cannot compress it down far enough to turn the lock ring and secure the unit.

Any advice would be most helpful. Thanks.

Tony in New Braunfels, TX