After doing some more research, it appears that the O-rings are part of the connection between the bleeder valve housing and the coolant tank, and are not part of the bleeder valve cover. It is hard to tell what is what, when you are looking at the parts diagram. So it looks like I have answered my own question.
The experts on the forum have failed me. 
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2000S Ocean Blue Metallic- 116K
3X Water Pump, Clear side markers, Crios Mod, Front engine mount, Flywheel, clutch, RMS, AOS, MAF, serpentine belt, power brake vacuum line, battery, 2X CV boots, Fuel filter, Oil filler tube, 3X ignition switch, 90K service, gas cap, Coolant tank
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