Have read numerous stories of problems with the sender gaskets. Some say two gaskets, some say just use new lock ring. I am thinking of a special sealer, gas impervious, and just a smidge to improve sealing. I have found that with the original lock ring that was damaged, the seal is not tight, can spin the sender. Two gaskets are pretty tight. I want to take the new sender with one gasket and new lock ring, and see how tight it fits, hope it will not spin. And in my nervous way, am thinking of just a bit of aviation sealer on the gasket. Thoughts appreciated. Permatex has no problems with rubber on data sheets, and I am doing a test on the old rubber to see how it holds up for now.