This is genuine Orange Seal Original sealant, 2.5oz, enough for one mountain bike or gravel tire. $5 Considered the best overall performing sealant without the staining properties of synthetics, and NO tire and aluminum corroding ammonia.
Also available in one REUSEABLE 5oz squeeze bottle ($10) for through the stem application which will seal 2 tires. (most squeeze bottles are 2oz)
(FREEBIE, get one 5oz bottle for free with purchase of 2 tires.)
See the "more ads by this user" link above for all kinds of tires and bike parts