Speakman | sku: SX-0228999 Speakman Vacuum Breaker Hub Repair Kit Speakman RPG05-0520 Vacuum Breaker Hub Repair Kit for Commander Service Sink Faucets. Kit includes check washer, seat and hub. This Speakman Genuine Part will assure the proper fit and quality one expects.Vacuum breaker hub repair kit for service sink... Log in for pricing