Fred wrote:

I see Tool station sell rubber and fibre washers:

is one better than the other?

My instinct is that rubber would be longer lasting?

Different materials with different properties for different applications.
It depends what you want to use the washer for.

If there is a lot of clamping pressure on the washer, the fibre washer would
be best. The rubber washer would be extruded and destroyed.

I would expect fibre washers to have the longer life for a given, suitable
application.

--
Spike