What are these?

Little metal and plastic rings I got in my gasket kit for my engine. What are they? Any help is appreciated.

 

I always have those two left over also.
Never investigated but the copper one "might" be for the oil pressure regulator nut, come to think of it, I don't think it is, its fit is quite sloppy IIRC.
Hang on to 'em if you want, but I believe they don't go to our engines

 

The white looks to fit the oil pan drain plug too me.

 

EGR valve and oil drain plug

 

Never seen an egr that big for copper washer. They mostly use a heat resistance gasket.

 

I was guessing ... I never had a EGR Buick. I figured it must be for something that gets hot. I have a few of those here, too.

 

Copper one is for the Oil Pump nut where the pressure relief spring . Nylon one is for the oil pan drain plug.

 

Sounds reasonable

 

You should NEVER post a picture of your finger prints on the internet, they might be found hundreds or thousands of miles from you at a crime scene from doing so.

Odds are they won't be but the technology is available to take them from a pic like that so there is still a very slim chance it can happen.

 

http://www.dailymail.co.uk/sciencet...int-used-criminals-fool-security-systems.html