Took me slower than a sloth to get it...lol

this use to be the standard for marine and bike fuel fittings years ago, among other fittings. Actually surprised it has never been brought up here.

Gasoila Chemicals Quick & Easy Sealant Reference Guide

Great reference there!

My buddy (a career boat mechanic) swears by Mercruiser Perfect Seal.

....

I can only speak in the past - the best on the market. I am sure many others currently are good as well. Every marine gas tank manu in the past especially plastic gas tank manus - all the directions were to use this stuff here,

I`ve been using it on drive o rings, cooler and drive gaskets, and any lower pressure threads and it`s fantastic. gaskets no longer tear when you take things apart and can now be reused (bellhousing cooler gaskets)
It`s my new go to .

Thats my Franks Red Hot. I put that $h!t on everything I take apart/put back together!