Yeah, I was looking for a rubber ring to put around my tank that a buddy had on his.
Vapingvip is the site selling the tanks 5/$10, and I have no way of knowing if they are pyrex or not, unfortunately that is why I was asking if there is a problem with companies making inferior third party glass and if their are known companies making superior glass. I had the zenith tank for atleast a year and I abused the crap out of it, so I got accustomed to not being concerned with dropping it. This tank just tipped over on a wood table and it cracked.
As for ruining a coil, I am not sure how comfortable I would be inhaling from a coil with glass fragments potentially in it. It probably wouldn't affect anything and I'm probably being over cautious but who knows.
I can not tell from the site if they are geekvape brand or third party.
Thanks for the responses, I guess for 10 bucks it is worth the risk and even if they are junky as long as they seal they would be good spares until good ones come in.