Terry is correct. I read through from publications that you might want to leave powering unsealed, just in case there is water leakage down under. There's a thin, rigid ring underneath the old gasket. What's it's function, and do I need to replace it likewise? I don't have a https://remingtonsnjbt.blogocial.com/helping-the-others-realize-the-advantages-of-zakdavi-blood-glucose-monitor-72073144