It's got to be plastic and there are three pieces that will heat and cool and cool and heat. The battery compartment, the main box, and the clear plastic face. And as I said before and will thread another question in this forum I can't understand why using any quality non-conductive waterproof lubrication will void the warranty. I'll make it simple by saying it like this. If you called Garrett and told them you think your rubber O rings were to dry what do you think they'd tell you to do? Do you think they'd tell you to send it in so they could put lube on them??? Or do you think they'd tell you go to your hardware store and pick up some quality non-conductive water proof lube and do it yourself??? And you shouldn't over kill the lube either, just enough to cover the O ring lightly. It's always good to be careful and if you want to call them and ask fine. Then post it here for all to see so the question can be put to rest. I'm not going to bother them with a silly question about lubing the O rings when they need it cause they have other things to do like repair the machine that weren't. Common sense is knowing that if they are pre-lubed at the factory (and are) that when the lube is gone it should be replaced. And if I were in a salt water environment I'd do it more often, salt will kill your machine faster than you can get it back when your sending it in for repairs.
Hey John E. how about finding this out for us or give us your answer on this? Do you ever lube your O rings? Or do you send it back so they can lube them? HH, Woodstock
