Belt Repair - What Is The Black Gunk?!

[BDAZ]

I offered to repair a friends belt which he has word for years and doesn't want to throw it away.

It appears to be a well made casual men's belt 1" with a very heavy machine stitch, probably 277 or heavier. The thread has rotted at the end and the top and bottom foot or so has become delaminated. There is some black gunk in the middle which looks like it may have been some type of double sided adhesive, which does not cover the stitching.

Any ideas what this is and what would be a suitable replacement.

Thanks!

Bob

[stanly]

pics might help

[BDAZ]

Here is a pic of the black gunk..

Thanks!

Bob

[tanda4]

Here is a pic of the black gunk..

Thanks!

Bob

Looks like some type of liner or padding.

[BDAZ]

It was used to bulk up the belt and also to stick the two sides together, but what is it and is it available? It's not leather, but seems more like adhesive residue. Maybe double sided foam adhesive?

Cya!

Bob