I live in a 23-year-old modular home; my utility room door leaks, since the original door gasket ( weatherstrip ) has deteriorated. I've searched in vain online and at Home Depot for a replacement. The strip is black, it seems like vinyl with foam inside, and it seals by compressing a "v" shape. Attached to the "v" is circular tubing that jams into a circular routed channel on the door frame. I can find "v"-shaped weatherstrip, but not with the tubing part. My neighbor, a builder, says he sees the stuff "all the time". I'm wondering if he just sees it on older houses--does anybody know if it's still made, or do I have to switch to some other sealing scheme?