Gasket material for this thermostatic air valve

[RaceDiagnostics]

The is the valve, it controls the idle speed during warm up....

...and this is the Mercedes gasket made by Elring, however Mercedes charge £12 for the gasket. It looks like it is about 0.5 to 1mm thick.

The material it is made from is Elring "Abil N" gasket.

Can anyone suggest an alternative gasket material I can use to make a new gasket.

Thanks

 

[zeppelin builder]

its only an air bypass so any thing really corn flake box? Lidl might match german oe quality

 

[RaceDiagnostics]

OK, just bought a bit of this for £1.45

https://www.ebay.co.uk/itm/HIGH-TEM...var=563585678748&_trksid=p2057872.m2749.l2649

 

[grim_d]

OK, just bought a bit of this for £1.45

https://www.ebay.co.uk/itm/HIGH-TEMPERATURE-GASKET-PAPER-SHEET-MATERIAL-WATER-OILS-FUELS-350-Degree-C/264048096853?ssPageName=STRK:MEBIDX:IT&var=563585678748&_trksid=p2057872.m2749.l2649

Used that exact stuff to make a head gasket for my compressor. Good stuff.