PFister 974-2570 Replacement O-Ring . Pfister takes pride in every single piece, part, and product they develop. Helping them maintain a their reputation and credibility. They take that same pride in creating replacement parts to perform the way they were originally intended too. Rather its for their faucets, showers, or bidets, you can rely on its quality to perform and last. The Pfister 974-2570 Is a Genuine Replacement O-Ring for Pfister Faucets. This individual Replacement Part comes in a fine Black finish.