Heat resistant plastic washer?

[John Larkin]

I just had my turbo shield powdercoated. Rather than cranking the mounting bolts into the freshly coated surface I would like to put a plastic type washer behind them that is thin yet heat resistant. Anyone know what readily available washers would do the trick? Nylon? I thought about making some from an old milk jug like I used on fender bolts during a restoration but I bet they would melt rather easily.

 

[1KWIKSIX]

Nylon or any polyethylene / polypropylene will melt like butter John.
The only material that comes to mind that may work is a phenolic. Are phenolic washers even available?
Not 100% sure that it will take the high temperatures, but it may do the job.

How about some high temperature gasket material that you could stamp out the washers from?

 

[dynoman]

Try Teflon washers, good to 500*

 

[CzyKats44]

Try Teflon washers, good to 500*

X2 we use them on turbo props.