I really thought I tested the blue capped bottles that were designed for cryogenics well enough but the rubber liner melts… Glad I only bought 50 of them I guess… I got a sample of some higher quality cone lined caps that I am testing right now, I hope they work because I have 300+ glass bottles still. Also got an induction sealing machine but it only came with two bottles, testing that out also. Seals up fine but time will tell if those kind of bottles will hold up or not.
The black capped bottles are still okay though!