Hi guys, I would like to design a waterproof (or at least splash proof) cylinder enclosure. The enclosure should be easily removed when needed. Now I already have enclosure (a piece of circular acrylic) and a cylinder aluminum. Both have same diameter. My questions are: 1. How to make it waterproof/splash proof? 2. Any suitable removable lock design I can use to attached the two pieces? or commercially available is acceptable. Please give advised. Thank you.