Because there was no readily evident quantity information and I needed two seals for two toilets, I purchased two and wound up with 10 of them in 2 packages. Quite a surprise, but that's why it gets a 4, yet much appreciated because now I don't have to purchase them again for a long time. They are excellent seals, hold up for a good length of time before needing replacement. As it happens, what I thought was a fairly expensive pair of seals was a very reasonable price for 10 seals.