Actually, Jim, I was referring to anyplace you can buy O-rings. In addition to hardware stores, plumbing stores, hose & fitting stores, industrial fastener stores and some fishing tackle stores all carry O-rings, and let's not forget Carr-Lane and McMaster-Carr. Tackle shops will only carry one or two sizes, at best. Most will be neoprene, tho, which is what you want. What the heck is "Buna-N"?

Steve