I have an Aluminum Divair that needs a lot of refurbishing, but the HP seat is actually holding pressure well. I am reluctant to remove it for a proper overhaul of the reg, since I hear they may not be available, and the questionable probability of it sealing again upon reassembly.
I'm wondering if there is a chance of being able to make one out of nylon stock, but can't tell enough about the construction from the figure in BASIC SCUBA. In that illustration it is called a Hi Pressure Nylon Seat, but wondering if it's a nylon insert into a metal carrier or ???
Anyone have an old one that could be photographed and posted here? Thanks for any help or advice.