ANSI Rotating Welded Metal Bellows Single Cartridge Seal



Product Line Features

  • Simple cartridge seal installation.
  • Sleeve is isolated from process fluid.
  • 3/8″ NPT flush connection allows for cooling and venting of seal.
  • 1/4″ NPT vent and drain connections provide differential sizing to minimize the potential of improper piping.
  • Non-sparking throttle bushing is positively retained to avoid pressure blow out, minimizing leakage in the event of seal failure.
  • Vantage seal glands include flush, vent, and drain connections and a close-clearance, non-sparking throttle bushing to direct any leakage to the drain connection.
  • Flush, vent, and drain connections available to be piped at multiple locations.
  • Angled gland connections allow for easier pipe fitting.
  • Setting clips provide positive axial and radial settingof the Vantage cartridge seal to ensure proper seal installation. The Vantage setting clips are easy to access for simple removal.
  • Convertible gland design to accept over four (4) design configurations.

VRB3/VBRB3 Features

  • Rotating design uses centrifugal force for self-cleaning
  • Uniform 360° transfer of torque to the rotating face
  • Welded metal bellows replace the dynamic elastomer which can hang up the seal faces
  • No springs to clog or break
  • No fretting
  • Only three (3) static elastomers – eliminate seal failures caused by dynamic O-ring “hang up” and offers cost savings when upgrading to Perfluorelastomers.


Materials of Construction

Rotating Seal Face: Carbon, Tungsten Carbide, Sintered Silicon Carbide
Stationary Seal face: Sintered Silicon Carbide
Bellows: Hastelloy® C276
Metallurgy: 316 SS
Elastomers: Viton®, Ethylene Propylene, Aflas®, Buna, Neoprene, Perfluorelastomer
Gland Gasket: Glass-filled Teflon™
Throttle Bushing: Glass-filled Teflon™

Operating Parameters

Temperature: 400°F (200°C)
Pressure: 300 PSI (20 Bar)
Speed: 6000 FPM

Note: Maximum temperature/speed/pressure/runout indicates operating extremes independently and does not imply the seal will function at these extremes at the same time.

Registered Trademarks:
Viton® – Dupont Performance Elastomers; Aflas® – Asahi Glass Co.;
Teflon® – E.I.Dupont de Nemours and Co; Hastelloy® – Haynes International, Inc.


For more information on the ANSI VRB3/VBRB3

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