Seal Kits (Series HUS) are essential accessories designed for the Series HUS Carbon Steel Push-to-Connect Couplings with Poppet Valve. These kits ensure the longevity and optimal performance of your STAUFF Quick Release Couplings by providing high-quality seals that prevent leaks and maintain system integrity. Specifically engineered for the Series HUS, these seal kits are a must-have for maintaining the efficiency and reliability of your carbon steel quick release couplings.