Nitrile bonded self adhesive cork disc 18mm diameter x 1.5mm thick
- Manufacturer: Various
- Product ID: Various
This disc provides most of the friction when rotating a small lever such as a flaps 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 an 18mm disc.
Indicative Pricing With Allowance for P&P
The above supplier sells these at £2.91 for a set of 4, so just under 75p 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.