I often get asked to replace washers in old faucets.
They are often in real bad shape. The one that I did today the house had been sold and when they turned on the water outside hose bib was running.
There was a chunk of rubber inside the faucet allow with a loose screw.
When I get called they are often in such bad shape that I can't tell what was there before.
My question is there an clue as to when flat or when bevel washers are to be used?