Type 58 Series mechanical seals include the 58U, 58B, 59U and 59B models. The 58U and 59U feature unbalanced designs, while the 58B and 59B use balanced designs. All models have a single-end, multi-spring construction, independent rotation direction and drive sleeve transmission.
The compact design provides a short axial length, making these mechanical seals suitable for equipment with limited installation space. Multiple springs help maintain consistent loading on the sealing faces, while the drive sleeve provides reliable torque transmission during operation. The different balanced and unbalanced configurations allow the Type 58 Series to accommodate various operating conditions.
The Type 58 Series mechanical seals can serve as direct alternatives to John Crane 58U, 58B, 59U and 59B mechanical seals. They are suitable for chemical centrifugal pumps, vacuum pumps, compressors and reaction vessels. Typical applications include chemical processing, refrigeration, oil refining, petrochemical engineering, wastewater treatment, power generation, papermaking and pharmaceutical production.
With multiple model options and a compact structure, the 58 Series provides a practical sealing solution for a wide range of industrial rotating equipment.
