IMO, nothing beats the orange 3M defib pads. They are resilient, have some self stick quality (gives you time to add tape, and can be repositioned easily.
Hold onto those seals, do not use them before their time!
When a lung drops, you aren't going to catch it by lung sounds until it crosses into 50% or greater (collapsed). It takes time to evolve. If you've got a vented chest wall, via sucking chest wound, or needle decompression, remember the lung can't expand without the pressure gradient created by the intact chest wall. That's when the seal becomes beneficicial, not in anticipation of a pneumo. The moral of the story, is to observe and only treat when symptoms become apparent. Anything before that, will speed the development of a tension pneumothorax.
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