BLUEMOMENT

Managed to get down to boat today only to discover a diesel leak form the bleed screw on top of one of the fuel filter housings, Oring had split, so with no spare O rings or copper/fibre washers had to improvise by using a tinned copper ring/loop crimp terminal filed out to the correct size and cut off the crimp part.
They actualy make great sealing washers as they are annealed so soft.
Cured the leak.

I've done similar using a suitable sized twisted loop of copper strands from ordinary cable loaded with a dab of solder.

I was mounting a new instrument the other day - being too mean and disorganised to source,order & wait for the panel mounting kit for a fishfinder - the best improvisation I could come up with to seal the instrument/backpanel joint was a section of two-core PVC cable with the inner cores and insulation removed (kinda "milked" out of the outer sheathing).

Is it just me, or is this beginning to sound a bit pervy?

Anyhoo...
I'm sure I can find uses for this workround elsewhere.