We have both a 1 meter long and a 45cm long airtight/watertight zipper that is coated with TPU and will bond to vinyl with HH66 or similar vinyl cement. It will also bond with TPU using HH66 vinyl cement as well (TPU and vinyl are compatible materials and will bond very strongly with each other). In fact all of our inflatable suits are made with a TPU zipper that is of the non-airtight variety.
This will NOT bond with latex or rubber. If you need a rubber airtight zipper, you will need to seek a dry suit zipper that is made of rubber.
