Hi Tom,
If you're talking about the brass "sleeve" lining the lanyard hole, yes, we should be able to replace that for you. Unless it failed through a materials or craftsmanship problem, there'd likely be a small fee (about $15) to mostly cover return shipping and handling and a little bit of labor. We refurbish the knife while it's in.
If you are in need of this service, give us a call at: 888.SOG.BEST.
Let me know if there is anything else we can do for you!