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Sealing Specialties handles the complete John Crane mechanical seal product line. John Crane is the largest and most complete mechanical seal manufacturer in the world. The John Crane offering includes pusher seals, bellows seals, non-contacting gas seals, cartridge seals, high pressure, high temperature, split, and severe duty seals. Market segment use includes chemical, power generation, pulp and paper, pharmaceutical, life science/ biotech, wastewater, mining, refining, and petrochemical.