You need to soften the seal around the housing by using a hair dryer for a while. I've heard of methods where you can boil or even bake the housing...but I choose not to use that method. It's easier if you're working with someone. They can move the hair dryer back and forth over one area of the seal...while you slowly pry the housing apart. The first time you do it..it will take a while. Just take your time because you don't want to damage anything.

When you're ready to reseal, you just reheat the existing glue that's left on the housing. When you reheat it, it will become tacky in which you can put everything back together. You can use water resistant silicon if needed.