Coating Threads of Old Bolt with Silicone Grease or Cooking Oil

[ugoleaf]

I was tightening the bolt that holds fry pan's glass lid and handle together and found out it was rusty. Went to buy a new one made of stainless steel but could not find locally the one that fits the handle. Don't feel like going to large dedicated stores and decided to clean the rust and lubricate with something so I can forget about it. Cleaned it good enough and now I want to apply either silicone grease or canola oil. The former is said to have higher heat resistance and to be food-safe so I wanted to apply it on entire bolt but someone said silicone grease will not hold up under heat. That person told me to apply cooking oil and burn it to let cooking oil cure. Said it will last for a while.

What should I apply? The bolt's head under the lid will be constantly exposed to inner heat.

Thanks

[big-all]

clean it up dip the head and first 3 threads in varnish let fully dry then give a second dip
when you screw it in use a thin bit off material between blade and head
expect to repeat every so often

[Someone-Else]

This oil, that oil, how about canola oil? clean it up and put it back.

Varnish, above a food product

[aeromech3]

Above a frying pan and cleaning in water forget oil and grease; about all I can think of is Red RTV (650*F, 343*C), I have used Gum Gum in some Hi temp applications but not sure about liquid resistance.

[ugoleaf]

aeromech3 Would Loctite Threadlocker Blue 242 or it's alternative be suitable?

[aeromech3]

I would say it might work based on its spec for use on car water pumps, if fully cured it will perhaps loose 50% strength when exposed to steam, can't vouch for food safety but hardly likely to exude from a threaded part after 24 hour cure time.

[Grumps]

I didn't know about it until I did a search. There is actually a Food Grade Loctite. Loctite 2046.

https://www.henkel-adhesives.com/jp/en/ ... _2046.html

Hope that helps.