Use my Pyrex a lot and freeze leftovers often. I hand wash and never microwave the lids, but I have to replace them every 3-5 years or so. They stop sealing well, and sometimes crack.They’re relatively cheap though so it’s not a big deal to me. The actual Pyrex portion seems like it will last a lifetime and I do microwave them a lot and sometimes bake or put them in the smoker.