Campagnolo Frame Pump Leather Washer Advice

[tommyjz]

I am looking for a replacement leather washer for a vintage frame pump.
The head at least is a campag.

Anyone know of somewhere to get some NOS washers or another that will do the job?

 

[eastsidebikes]

I've made them from bits of inner tube in the past. Use filed down penny washers to hold the rubber in place