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Get the correct size and you don't seem to have that problem.
I must say the float bowl orings I tested when I was sourcing my orings for the carbs fitted with no grease or adhesive at all. Just pressed into place and stayed there. Get the correct size and you don't seem to have that problem.
I had the same experience with the Orings as ODDjob - I got the Oring set from Nurse Julie when rebuilding my carbs a couple of weeks ago and they held themselves in the bowl grooves with no need for any grease/glue.