Carrara Liner

This is the hard plastic liner? I have an older Concept belt and when the liner started cracking I chipped of as much as I could then sanded the inside with 800/1000/1500 grit sandpaper then crocus cloth. It wasn't easy and isn't a mirror polish, but it worked.

 

it is neoprene like the material of a diving suit.
glued with bissonkit or another contact adhesive

 

Could shrink wrapping work for it?

 

The liner should be available at Home Depot, just need to find one of similar thickness and flexibility.

 

Try thick superglue, although the best option is 3M Neoprene High Performance Rubber and Gasket Adhesive 1300 but it is quite expensive for only one use case.

 

Ah, the padding part. It was a while ago, but I replaced it with food-grade polyethylene foam. Like this- https://www.mcmaster.com/8722K26-8722K261/
Haven't had any skin reactions to it, although it does hold some water so good drying is essential.

 

Please make sure you use closed-cell neoprene foam instead of open-cell - there's a big difference.

 

The foam I used is self-adhesive and sticks rather well (no problems since I put it on but I don't wear the belt constantly). If it wasn't, "contact cement" would have been my choice- can be difficult to work with but is usually good on non-porous surfaces.

Regards neoprene- the poly has been better for my skin; the original neoprene causied irritation which is why I changed. "Food grade" means it's generally going to be less reactive.

 

How to recognize both kinds?

 

The (search engine of choise) is a friend-
https://www.foambymail.com/difference-between-open-cell-and-closed-cell-foam.html

Generally, open-cell is lighter for the space it occupies and it picks up much more liquid.

 

I’ll just leave this here. You might find what you need here: https://www.etsy.com/listing/1398569693/
Hope that helps.