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Live-loaded Mechanical Packing Cartridge Seal

The Type LMPC is a cartridge seal designed for static or dynamic applications. This seal is mechanically loaded in the axial direction by the gland follower. All internal components of the seal are held together by PTFE spacers. The spacers also hold the smothering gland to the drive collar. The seal can be installed on new or existing equipment without any modification.

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John Crane Packing LMPC


  • Low friction packing design with controlled leakage.
  • Custom designs adapt to any equipment.
  • Positive mechanical drive.
  • Hard-coated shaft sleeve.
  • Internal/external flush and lubrication capabilities.
  • Live-loading packing design eliminates frequent manual gland bolt adjustment, which increases the time intervals between manual gland bolt adjustments.


Temperature Limits

-450°F to 1200°F/-268°C to 650°C

Pressure Limits

Pump: Vacuum to 1000 psi(g)/68 bar(g)

Valve: 6025 psi(g)/410 bar(g)

Speed Limits


pH Range

0 to 14 (except for strong acids)


20 to 500,000 cps

Recommended Applications

  • Process Pumps
  • Mixer and Agitators
  • Gearboxes
  • Other Rotating Equipment
  • Valves

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