I would not use any tire sealant, better to put a tube in. I did use Slime once on a JD 318 I was rebuilding. I put an old tire I had on to replace the rotted out one on it but it leaked down and because I got tired of airing up the tire every time I wanted to move it and did not want to put a new tires or tubes on it until it was finished. The Slime was in there for about 6 months and since I had swapped out the tire before I KNOW the rim was in near perfect shape inside before the Slime was used. The rim was already beginning to pit when I cleaned and painted it.
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