Hello folks, new member here, I have a question for sealing my safe. To begin with, I've recently bought amazonbasics security safe - 1.2-cubic feet https://www.amazon.com/AmazonBasics-Security-Safe-1-2-Cubic-Feet/dp/B01BGY6GPG which is made of solid pry-resistant steel and has the following dimensions: 16.93 by 14.57 by 10.63 inches (L x W x H). It has pre-drilled holes for bolting and the door rattles/is kind of loose. Therefore, I would like to ask you,how can I seal the door and the pre-drilled holes in order to make it airtight? Should I caulk it with silicone/polyurethane?Use rubber seal? I want something that can be removed either because I may make some changes in the future(e.g add lighting/power) or in case the door doesn't open after the sealing. Thank you in advance.