I'm looking for a masking plug that

[Harry.]

I'm looking for a masking plug that is suitable for temperatures up to 200C. It needs to fit snug into the hole without covering any of the surrounding area. I've seen some flangeless plugs with a pull tab and they seem ideal. But they are made from PVC. Do you know what temperatures PVC can withstand please?

 

[Compositepro]

https://www.google.com/search?client=firefox-b-1-d&q=silicone+masking+plugs

 

[hendersdc]

I googled "high temperature masking plugs" and found these that good to 600F. [URL unfurl="true"]https://hightempmasking.com/[/url]