Just two ounces of Stan's Tire Sealant in a converted standard tire or a tubeless tire can repair up to a 1/4" hole instantly. Pre-measured and ready to apply to one bicycle tire. Stanâ€™s Tire Sealant will stay liquid in a mountain bike tire with a thin casing for two to seven months on average. Riding in arid climates or storing the bike in a hot area will require more frequent monitoring of sealant levels. Special anti-freeze agents allow the sealant to be used in environments as cold as -30Â° F.