The RP-DSR552BK-27 gasket fits DSR5520048BK/60BK (part #27) and DSR860048BK (part #1) shower models. Made from flexible, durable material, it provides a watertight barrier, preventing leaks and water infiltration. Its precise profile makes installation simple: remove the old gasket, clean the groove thoroughly, and press the new gasket firmly into place. Perfect for replacing worn or damaged seals, it helps maintain a clean bathroom environment and ensures the long-lasting performance of your shower enclosure.