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API Seal 9300 Series


Edge welded metal bellows API Seals are best suited to higher temperature applications in the oil and gas industry, available in either a Type B or Type C configuration. The bellows seals allow for graphoil based, non-elastomeric secondary sealing to be used (Type C) In high temperatures or very aggressive chemical environments which is a significant advantage. The 9300 works well in a number of applications and is well suited to an API plan 62 support system utilizing a steam external quench.

Though the standard 9300 series seal is a flexible rotor design, it can be offered in flexible stator configuration if required

Steam quench condition: API 682 4th edition lists Steam as a possible quench media, what it does not say is that steam is an expensive resource and can also be detrimental to equipment reliability. Therefore, it is important to control the volume and quality of steam to help prevent the chance of moisture contaminating bearing lubricant and reducing equipment uptime.


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Application Form



  • Low Emission.
  • Quench and drain, Flush ports.
  • Compact construction for easy retrofit to smaller pumps.
  • No Spark carbon throttle bushing to restrict process flow to atmosphere.
  • Cartridge Design for quick and easy installation.


  • Hydrocarbons
  • Oil Refining
  • Petrochemical
  • Process side: Operates with API plan 11, 12, 13, 23, 31, 32.
  • Atmospheric Side: Operates with API plan 61, 62, 65.
  • Designed according to API 682 Type B, category 1 or 2, arrangement 1, configuration 1CW-FL

Operating Range

  • Pressure Max: 290psi (20 Bar)
  • Temperature Max: 200C (400F)
  • Speed Max: 4000 fpm (20 m/s)

Standard Materials

  • Metal Parts: 316SS or Hastelloy C
  • Seal Faces: Antimony Impregnated Carbon Graphite, Resin impregnated carbon graphite, Silicon Carbide, Tungsten Carbide
  • Elastomers: FKM, FFKM, EPDM
  • Springs: Hastelloy C