I am upgrading my Haslab with a more flexible and accurate hose, but I don’t know the part numbers for the male/female connectors for the connectors to the pack body.
I have 3D files for them, but looking for the REAL and actual working parts, I don’t have the actual names or part numbers of the male/female connectors, though.
The real connectors are vintage Cannon aviation connectors. I may be wrong but the story goes that even production couldn’t find enough of a supply to make the Afterlife packs so they had to cast their own.
I think a handful have been found in the community but they are extremely rare and very expensive.
See here in the Afterlife Pack Research thread : Ghostbusters Afterlife Proton Pack Research - #5 by m_burkit - Proton Packs - GBFans.com