Ok Parts list for ERA. Most of this is here but not in one place. Thought I would put it all together.
List of parts on McMaster.com that will work on the ERA.
Thanks to the REO people that did the leg wok on this.
McMaster-Carr
7122A12 Inch Hex L-Key Standard, .035" Hex, 1-5/16" Length $.23 each
NEW INFO 9/25/2012
The ERA. O-Ring size is 1 x 10. From the ERA Team
This is McMaster's part number: McMaster-Carr 9262K104
92029A087 Metric Type 316 SS Cup Point Set Screw M2 Size, 4mm Long, .4mm Pitch, packs of 10
94017A101 Metric Cheese Head Phillips Machine Screw 18-8 SS, M2 Size, 4mm Length, .4mm Pitch, packs of 50 6.72 pack
Now this is not the cheapest place to get the stuff but you can get it all in one place.
NOTE: O-Rings there may be a slight deference in Each ERA so it was suggested to pick up both orings just in case you cap is to loos you can use the bigger ones.
Hope this helps any one looking for parts.