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Re: Do I need to put a sealer on my sails after cleaning them
Unlike chlorine bleaches, the "oxy" cleaners don't break down fabrics so if you want to hit the stains again with a scrub brush and a longer paste scrub or something else, that shouldn't be a concern.
New sails are usually calendered with a resin coating to stabilize the fabric and block UV damage. You wouldn't be able to recoat them the same way but I suppose you could use some 303 or other UV protectant spray for the same reason. I don't know anyone who does, though I think some of the commercial cleaning services do offer coating of some kind after cleaning.
McLube's Sailkote is a wax and krytox lubricant...a very good lubricant, but I think HyLyte must be thinking of a different product for sails??