I've replaced seals in a couple of these cameras using black foam tape with an adhesive backing. It's 2mm thick, so if you cut 2x2mm strips, they fit very nicely. The ones on the door ends are a little tricky to install, but with time and patience, it's doable. The nasty part is getting everything clean first. I used sharpened chopsticks as scrapers with alcohol and pipe cleaners to finish cleaning out all the gunk.