O-Ring Assortment - best options?

[Pinne]

I'd like to buy some sort of Metric O-Ring assortment to have on hand. General use, fuel system use, etc - so I think I want Viton. I don't want to buy junk off Amazon - is there a well regarded source for this sort of thing rather than ordering individual units from McMaster?

 

[TailGunner3000]

I bought a Dorman kit of about 500 assorted o-rings a couple of years ago from one of the auto parts stores. I don't remember which one, but it was only about $20 and quality is very good.