Type 59B PTFE Wedge Seals | John Crane Mechanical Seals
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Type 59B

General Purpose DIN, Balanced, Multi-spring, PTFE Wedge Seal

A DIN seal for general and high-pressure duties in the chemical, refinery, petrochemical and pharmaceutical industries. Alternative seat designs and material options are available to suit product and operating conditions of applications. Typically applications of a corrosive nature, cryogenic and high temperature.

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  • California Residents: PROPOSITION 65 WARNING
  • Complies with European Standard EN 12756, formally DIN 24960/L1K, ISO 3069 and API 610 specification for the petrochemical industry.
  • A versatile design with multiple material options for the widest range of liquids and temperatures.
  • Optimized design with hydraulically balanced seal face gives low face loading at high pressure.
  • Maximum face surface exposure to liquid for heat dissipation.
  • Multiple S-rings ensure even face loading while compensating for acceptable shaft misalignment.


Temperature Limits

-60°F to 930°F/-50°C to 400°C

Pressure Limits

900 psi(g)/62 bar(g)

Speed Limits


Recommended Applications

  • 流程泵
  • 其他转动设备

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