I've got a 1000 litre diesel storage tank in a barn which is connected to a
system of hoses. The hoses are connected to the tank via some 1/2" BSP
connectors a bit like these
think this kind of connector is intended to seal on its threads rather
than by pressing against a washer. Although PTFE tape was applied to the
thread when assembled, diesel is slowly leaking from the connectors, at a
rate of a few CCs per day. The leakage is definitely from the thread rather
than the hose-barb.
I know the correct answer is "drain the hoses, and reassemble the connectors
with a better thread sealant", but disassembling it would be inconvenient,
so I'm looking for a bodge.
I've tried wiping all the visible diesel from the exposed threads and
smearing them with blue Hylomar, but that started leaking before the Hylomar
I guess what I'm looking for is some kind of fast-setting silicone sealant
that is tolerant of small amounts of diesel while setting. Ideally I'd like
something that won't set completely hard, because I might want to dissamble
in future. Perhaps some kind of 2-part sealant, or one that has to be heated
before it is applied?
- posted 9 years ago