I was under the impression that tyre sealant was meant for tubeless tyres? I use it on my mountain bike after I converted the wheels to tubeless.
On short trips I carry a canister of "Tyre weld" or similar which can inflate and fill the tube full of a foam sealer which usually seals the puncture. But then I'm prepared to replace the tube later because a decent repair is very difficult due to the sealant.

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2014 XT660Z - Barrett pipe, DNA stage1.5, Barkbuster hand guards and handlebars, Pivot pegs, Teknik suspension, Guard-it engine protector combo, B&B rear rack, Trax topbox.