fjpatrum: What superlyte27 said and, to answer your question, since you asked: If my life will be depending on an O-ring staying together and in place I suggest that I will buy the best available. Being an extreme Patriot, I try to buy everything I can that is made by Americans and in the USA to try to keep our brothers and sisters working and off welfare and my Social Security checks coming in. Others may disagree. Since the Chinese have a history of dumping inferior products on the ignorant American consumers, along with manipulating their currency to their advantage over our Dollar and, in my and others opinion, surely they are the closest thing that we have to an enemy, I think that a prudent person would stay away from anything that their life depends on made in that particular country, not to mention Mexico, Bengladesh, India and some other fourth world sinkholes. Just my opinion of course. You surely have your own. Cheers.