High Temperature Metal Bellows Seal.

The P848 series is a high temperature single/dual metal bellows cartridge seal intended to provide excellent sealing performance general services, primarily on high temperature application for petrochemical and chemical industry. P848 particularly exhibits high performance in the operation of critical process fluids of hydrocarbon, boiler feed water, sour gas, propane and butane, non-flashing hydrocarbon and flashing hydrocarbon. The improvements in design reliability and robustness are made possible by the utilization of sophisticated Finite Element Analysis (FEA) Engineering Software. These features are further verified by the usage of ProEight’s high-end testing equipment, the patented mechanical seal static tester – AccuTEST and mechanical seal dynamic tester – AccuDYN (Patent Pending).

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  • Uniform face loading 360°
  • Simple metal bellows design construction without loose parts
  • Double ply metal bellows design for high pressure application
  • Self-cleaning design
  • High flow pattern and distributed flush system
  • Bolted Auxiliary Gland


  • Centrifugal Heavy Duty Pumps
  • Centrifugal API Process Pumps
  • Centrifugal General Purpose Pumps
  • Positive Displacement Pumps


Temperature - 40°C to 425°C / - 40°F to 500°F
Pressure Up to 20 bar g/300 psig
Speeds Up to 50 m/s / 10,000 fpm


  • Oil & Gas Production
  • Petroleum Refining
  • Pipeline
  • Pulp & Paper