Pentair Sta-Rite DuraGlas 5/8" Shaft Seal, Buna, Pre-1998 (U109-93SS) pooltek contributing to cleaner internal operation

contributing to cleaner internal operation and more dependable tool performance

It is often replaced during a full multiport valve rebuild

The CMP 25307-500-020 chlorinator lid is designed for compatible Rainbow chemical feeder applications

or worn from age and use

and screw components in gray

Pentair Sta-Rite DuraGlas 5/8" Shaft Seal, Buna, Pre-1998 (U109-93SS) pooltek contributing to cleaner internal operationThis Pentair Sta Rite replacement is built for pump repair and helps service pre 1998 DuraGlas pumps requiring a 5 8 inch Buna shaft seal. It targets older pump assemblies where model year matters, making it a practical choice when the original part is cracked, worn, leaking, stripped, brittle, or missing. It is especially useful for targeted repairs where replacing a larger pump, filter, or cleaner assembly is not necessary. Confirm the part number,