Chesterton 880-09 RU CB SH 880S Rotary Shaft Unit

Chesterton 880-09 RU CB SH Rotary Shaft Unit (880S) is a rotating-seal assembly in Chesterton’s 880S family, designed to seal a 1.125‑inch shaft. The RU suffix identifies it as a Rotary Unit, with CB SH denoting the specific configuration encoded in the model name. Verified data from Chesterton installation literature for 880S configurations confirms the shaft size of 1.125 inches, a standard specification used across 880S variants. This 880S variant is intended for sealing rotating shafts in pumps and other equipment that require reliable sealing on small-diameter drives, offering a compact, field-serviceable solution for industrial shaft sealing challenges. The 1.125‑inch shaft size is consistently listed in Chesterton’s technical materials for 880S configurations, aligning with manufacturer documentation and product listings that describe 880S variants by shaft diameter.