Double seal (with floating bearing for the shaft) for sterile applications. The specific design free of dead spaces with polished surfaces on the product side meets the requirements for hygienic applications.

Item Description
1, 15 Seal face
6 Sealing ring
7, 9 Seat
8, 10, 16 O-Ring



  • For top, bottom and side entry drives
  • Double seal
  • Balanced
  • Stationary springs on product side
  • Independent of direction of rotation
  • Gas-lubricated
  • Cartridge unit


  • Ready-to-fit and factory-tested unit
  • Rotating seat at product side
  • Torque transmission by clamping ring for large axial movements
  • Non-contacting operation
  • No friction on the seal faces, no heat generated at the seal or in the medium
  • Sterile design available
  • ATEX certification on request

Operating range

Shaft diameter:
d1 = 20 ... 200 mm (0.8" … 7.9")
p1 = Vakuum ... 6 bar (87 PSI),
Δp = min. 3 bar (44 PSI),
p3 = max. 9 bar (131 PSI)
t1 = -20 °C ... +200 °C
(-4 °F … +392 °F)
Sliding velocity: vg = 0 ... 5 m/s (0 ... 16 ft/s)*

* Higher velocities on request

! It should be noted that the extremal values of each operating parameter cannot be applied at the same time because of their interaction.


Seal faces and seats: Silicon carbide, FDA conform
Secondary seals and metallic parts acc. to application and customers' requirement.

Standards and approvals

  • FDA
  • ATEX


  • Flush

Recommended piping plans

Gas supply by EagleBurgmann
GSS4016/A250-D1 or GSS4016/A350-D1.

Note: To assure a sufficient supply of the mechanical seal, pressure at entry of the supply system must be min. 3 bar (44 PSI) above max. barrier pressure always.

Product link:
EagleBurgmann GSS

Product variants

Double seal (with floating bearing for the shaft). If the seal has to run in the product, please inquire.
Double seal (with floating bearing for the shaft).

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