John Crane C15220 Type 5611 1.75in Cartridge Mechanical Seal Assembly

This is a new, factory-sealed John Crane Type 5611 cartridge mechanical seal assembly, JCI Part Number C15220, belonging to the 5600 Series (stamped "John Crane 5600 Series" on the gland). The Type 5611 is a single, unbalanced cartridge seal designed for ANSI pump applications per API 682 / ANSI B73.1 standards, featuring a multi-spring design with a stainless steel sleeve and gland plate, four-lug drive-dog stationary face arrangement, and PTFE secondary sealing elements (white face gasket/o-ring visible in photos). The seal is sized for a 1.75-inch (44.45 mm) shaft bore, as confirmed directly from the box label ("SIZE: 1.75IN"), and the face materials are designated MATTE MR/TYP56 per the box label — consistent with a carbon-graphite rotating face against a silicon carbide or ceramic stationary mating ring. Work Order W007150057 and date code 07/23/15 are laser-etched on the sleeve, confirming genuine John Crane manufacture. This seal is suitable for centrifugal pump applications handling hydrocarbons, water, and mild chemicals in refining, petrochemical, and general process industries.

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