Permatex #2 "form-a-gasket". Comes in 4 different #s that all have different properties. Alcohol is the solvent and for cleaning your hands. Old school stuff but still the best for some applications. #2 is a great gasket tack/sealer. RTV silicone is way overused in my opinion. Contrary to poular belief it doesn't stick well in many applications and most varieties are not very oil/fuel tolerant. In most cases especially RTV these chemicals are meant to be gasket replacements not sealants.
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