Another product I have used on dive gear is called SEAM GRIP. It is sold in camping outkets for seam sealing of tents. I've had great luck using it to bind lioose ends of suit stitching.
It is a clear material in a tube. I dries to a vey pliable state, not unlike silicone sealant. It may have the flexibility and permeability to work for you.
Pete
It is a clear material in a tube. I dries to a vey pliable state, not unlike silicone sealant. It may have the flexibility and permeability to work for you.
Pete