CamelBak O-Ring Leak Repair Kit (Standard and OMEGA) (2" (Standard))
Does your CamelBak reservoir leak while you are using it?  The symptom these o-rings will remedy is when you squeeze on a filled reservoir, you will see water drip out where the fill cap screws on.  If you open the cap and inspect the O-Ring, you will be able to see cracks or other defects on your O-Ring (remove and stretch it out to really see the cracks).  This happens eventually from general wear and tear.  If this is your problem, buy this O-Ring, replace it, and enjoy your CamelBak again.   STANDARD: ~2" in diameter, black in color, smaller diameter than a Coke can. OMEGA: ~3" in diameter, clear or black in color, larger diameter than a Coke can. (Note: our O-Rings are black, even if your original was clear).