Nitrile bonded self adhesive cork disc 30mm diameter x 1.5mm thick
- Manufacturer: Various
- Product ID: Various
This disc provides most of the friction when rotating a wheel or axis lever. Nitrile bonded is preferred as normal cork is prone to squeaking.
I found a supplier on eBay in the UK. There should be other similar suppliers around the world otherwise purchase some 1.5mm nitrile bonded cork with self adhesive backing and cut out a 30mm disc.
Indicative Pricing With Allowance for P&P
The above supplier sells these at £3.52 for a set of 4, so just under £1 each inc. postage.
Try to avoid normal cork but if its your only option you could try it. A thickness of 2mm is often too much for certain uses so be sure to find 1.5mm thickness.