Polished SS304 Stainless Steel 21 T Mechanical Seal 12.7–76.2 mm

The Type 21 mechanical seal (also styled 21 T) is a single-end, elastomer bellows mechanical seal, originally developed by John Crane and now a de facto industry standard . It’s compatible with a broad range of rotating equipment, including centrifugal, rotary, and turbine pumps, mixers, compressors, chillers, and agitators. Common application areas include water treatment, pulp & paper, food & beverage, wastewater, HVAC, pool/spa systems, and general industrial processes

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  Versatility in mounting and pump compatibility.

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  Low leakage due to balanced face loading.

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  Self-compensation for wear, run-out, and axial movement.

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  Minimal clogging from outside-spring and bellows design.

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  Field-serviceable, with easily replaceable parts.

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