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High Temperature Advanced Stationery Metal Bellow YE400


The EagleBurgmann YE400 seal, used especially in refineries and for heat transfer media, is specifically designed for the most demanding of high and low temperature services as well as for high-speed applications.

The stationery configuration, in which the flexible bellows element is fixed into the equipment casing, eliminates damaging “swashing” motion due to casing distortion or shaft vibration and promotes more positive sealing while significantly extending seal life.

The core of the seal is an edge welded bellows unit with a design proven for more than 45 years in innumerable applications to ensure many years of trouble free service.

The bellows are precision manufactured in Inconel 718 material and are subject to the highest levels of quality control to deliver consistent and reliable operating performance.

The pressure capability of the standard YE400 can be increased through the use of a double ply (Laminated bellows plates) version.  This design allows a low spring rate, providing face loads close to initial design values, as face wear occurs or shaft expansion reduces operating lengths.


  • Face Material: Carbon or SiC
  • Metal Components: SS 316
  • Bellow Material:

    YE400: Inconel 718 with Alloy 42 Retainer

  • Secondary Sealing: Grafoil

Performance Capabilities:

Single: Vacuum to 290 psi
Double: Vacuum to 508 psi
Temperature: -400ºF to 797ºF
Speed: Up to 164 ft/s

(Consult EagleBurgmann for applications other than above limits)

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