My Old Man and I have about 600 Grolsch bottle between us. We've replaced maybe 30 seals. I have a whole bunch of the ooooold 500ml ceramic top ones (the newer ones are 473ml and plastic topped). Most of these oldies still have their original seals and must have done dozens of brews. I have only ever had one explode, and that had a visible crack in the bottom when I filled it.
I look after the original seals because the rubber is far better than any replacement I have seen or used.