Good Source Aftermarket Door Seals

[n86121]

Over 25+ years I have tried everything.

What finally worked was buying 1/16th x 1/2 inch wide closed cell phone tape, found on ebay. I applied the tape to both the door frame and the door,
so when the door closes the seal forms BETWEEN the two touching, attached layers of tape.

The 1/16th allows you to build layers where needed, and not where it causes trouble.

I ran a thin piece of something (paper? String?) along the seal,
in between the two layers of touching tape, until it was held at every point.

Now I can fly the aircraft under water and it remains tight.