Grohe Universal Screw Cap - 43735Grohe Universal Screw Cap 43735 Screw cap designed for GROHE faucet and valve systems to secure internal components and maintain proper function. Features Universal screw cap for GROHE systems Used to secure and seal internal valve or fitting components Helps protect against dust, debris, and leaks Typically includes integrated sealing (O ring) for better performance Durable construction for long term reliability Precision engineered for proper fit