Friction Washers; Where can I get them?

[t100martin]

I have a variety of downtube and bar end shifters which are useless because their friction washers are either worn out, damaged or missing.
Is there anyone out there who has a stock of these?
Failing that, does anyone have a work around that uses commonly available plastic washers?

 

[twain]

got a pic of what you need?

 

[t100martin]

No, but I'll get the actual dimensions.
The internal measurements seem to be common to all friction shifters. As far as I'm aware, the braze-on and clamp-on bosses all have the same diameter and distance across the flats - correct me if I'm wrong.

 

[t100martin]

I have a braze-on boss to hand, the dimensions are;-
Diameter: 8.9mm
Length: 10mm
Across flats: 5.8mm
Depth of flats: 4.9mm

I'll measure the washers later.

 

[WilliamC]

I cut one out of a tupperware lid a few years back for a shimano shifter, still working fine.

 

[twain]

ive heard milk bottle tops (plastic ones - green top/blue top etc) can be done...

 

[Robbied196]

I have a pile of these.....somewhere! I think they are new old stock Huret, I would imagine they'd fit other levers. If you check the size you need and I'll try and dig them out at the weekend

 

[glpinxit]

I have a chunky o-ring doing friction duty on one side of my Campagnolo shifters. (Works fine for the front mech but I would track down the right part for the rear as it is a bit vague.)

 

[t100martin]

I've had a good dig around in my pile of shifter bits and although the boss dimensions are fairly universal, the actual layout and thickness of the friction parts varies quite a lot.
The particular part I need is a thin, hard, plastic washer, which probably started life about 1mm thick. -I'm just guessing here, my examples vary from about half a millimetre, down to hardly there at all!
Inner diameter is 9mm. outer diameter is 14mm.
If anyone knows of a good source of these, or something similar (that doesn't come in a bag of 1,000!) please let me know.