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Type 3710


Compact Cartridge O-ring Split Seal

The Type 3710 mechanical seal uses our advanced split seal technology to meet today's environmental guidelines as well as future regulations. Its unique, easy-to-install design readily adapts to horizontal and vertical equipment.

With more than 30 years of split seal experience, from sophisticated marine propeller shaft seals to thousands of industrial pump and mixer applications, John Crane has established itself as the worldwide expert in split seal technology.


California Residents: Proposition 65 warning

  • Hydraulically pressure-balanced design ensures seal integrity during system upsets.
  • Unitized finger springs are non-clogging and provide positive drive to the stationary seal face.
  • The Type 3710 eliminates the need to dismantle any piece of equipment, large or small.
  • Its fully split design can be installed in less than 30 minutes, either on the packing sleeve or directly on the shaft.


Temperature Limits


Pressure Limits

Vacuum to 200 psi(g)/13.7 bar(g)

Speed Limits

Up to 62mm/2.500": 3600 rpm

 Between 62mm/2.500" and 135mm/5.250": 1800 rpm

Over 135mm/5.250": 900 rpm

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