ps -- I had some issues with the pressure seal; pulling the (presumably silicone?) seal out and reseating it in the lid periodically seems to make everything wo

ps -- I had some issues with the pressure seal; pulling the (presumably silicone?) seal out and reseating it in the lid periodically seems to make everything work better. Also, you shouldn't feel any resistance when you rotate the lid into sealed position. If you do, pull the lid back off; juggle the seal a bit; then reseat and twist to seal again.