I've been using Permatex Super 300 brush-on liquid sealer for over 60 years. It was developed to seal aviation gasoline, and I've never seen an application it didn't work well on. It's also more economical, and a LOT less messy than spray-on sealers. Super 300 is almost black, NOT the 3-D brown brush on liquid.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!