I know this seems like a crazy question.. but I bought my Excal second hand and it was already set up with them. I have always been too unsure to just give them a dunking. Anyway I'm now looking to sell my machine and just looking to be as accurate as I can about what someone will be buying. Thanks
Actually, disregard original post after 2 years I just came across paperwork that tells me that they are for underwater use. Awesome! Would have just deleted the post but wasn't sure how to go about it. Happy hunting!!