looking for 18mm petcock lever gasket

[OSPRNG]

noticed that the fuel started barely dripping with thee lever fully on. disassembled the petcok and found that the orange gasket with 3 holes in it is completely crumbled up.

traced the petcock to be Acerbis
http://www.acerbis.com/ecat/pdf/hi/19_fueltanks.pdf

but it doesn't look like they sell or have a part # just for the 3 hole gasket.

anyone knows where i can buy these as replacement, or have a couple to sell?

thanks

[Eric Frith]

It depends on what bike it is?, but I use these for all my MZ spares.

http://www.akf-shop.de

[OSPRNG]

its mz 125 sm. i was hoping for something states-side, but i'll give that site a shot. thanks.