I've found that Permatex aviation sealer works wonders on hoses. It stays soft so future hose removal is no issue. I use it on marine stuff to keep corrosion issues down and it seems to work well. A cast iron hose nipple and sea water don't play well and leads to leaks and/or severely stuck hoses that sometimes have to be cut off....expensive hoses. I've used it on a few cars & boats where a nipple was already pitted badly and it kept the connection from leaking, handy when replacing one would be $$$.