I have an old Pincor generator that has a plastic gas tank. I suspect it is made out of high density polyethylen (HDPE). I need to seal the 1/8 NPT fuel shutoff into the tank. The original shutoff valve had some type of glue sealing (and holding its orientation) in place. I had to remove the old shutoff because it was rusted solid.
I tried using a hardening teflon-based sealer (recommended by Permatex), but this doesn't hold the fitting still enough (when you open the shutoff, the fitting moves, then the cured sealer doesn't seal anymore). Permatex doesn't recommend a sealer that stays soft (like their PST goo) or a teflon-based tape.
Anyone have any success stories using JB Weld or something else available at an auto parts or hardware store?
Whatever they used at Pincor back then really stuck to the plastic tank. Unfortunately, Pincor has been out of business for years. The local OPE guy says use teflon tape, but that won't do the job.
My main concern is that the fitting can't rotate after curing. Also, there isn't any way to mechanically secure the fuel line in place.
Any help would be great.
Ralph S
