Super 300 was developed in the 1950s to resist aviation gasoline and work in other high stress environments. 3D or 3H brush-on liquid is NOT the same stuff- - - -not even in the same ball park, let alone the same game! I'm going to need to stock up, it seems. Nothing else on the market that I've used in the past 40 years can beat it for convenience and sealing ability. Thanks for the heads-up!
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!