I scored 13 grolsch bottles at a yard sale for $4 (i'm pretty thrilled about that), but a lot of the rubber seals are dried out and two are missing. I work at a hardware store, so I can get o-rings for almost nothing. Would one of those seal it well in the long-run? I haven't used grolsch bottles for anything, so i'm not sure what I should expect as far as longevity for the seal.
Also, do they still make them with ceramic tops? I've only seen them with plastic tops (not grolsch brands, but the same style), but mine are ceramic. I'm just curious.