Metal Bellow Seals – MBR / MBS / MBH

Metal Bellow Seals are used for high temperature applications such as Refinery, Petrochemical & Chemical industries. Due to its narrow seal cross section design, it can replace most type of seals used in ANSI pumps. Secondary seals are made up of Grafoil, which can withstand high temperatures up to 425°C.

It is resistant to abrasive particles in pumpage and facilitates no Shaft/Sleeve fretting.

The edge welded bellows are produced by stamping out a male and a female diaphragm and welding them edge to edge. These diaphragms typically have several ripples running from ID to OD.

We have the following Metal Bellow Seals:

MBR – Rotating Bellow Assembly
MBRC – Rotating Bellow Single Cartridge Assembly
MBRDC – Rotating Bellow Double Cartridge Assembly
MBS – Stationary Bellow Assembly
MBSC – Stationary Bellow Single Cartridge Assembly
MBSDC – Stationary Bellow Double Cartridge Assembly

MBH Mechanical seal is a hook-sleeve design made for handling heat transfer media & high temperature hydrocarbons. The seal is self-cleaning without springs.

Equivalent to:
Eagle Burgmann Y13/ Y14/ Y15/ MFL85N/Mtex
John Crane Type 115WT
Flowserve BX/ BXB/ BXR

• Available as Cartridge seals in Single and Double arrangements.
• Cartridge seals are beneficial as they reduce down-time periods and enable mechanical seals to be installed in hard-to-access places.
• MBRC, MBSC, MBR DC & MBS DC models are available for your varied applications.
• Metal bellow seals are pressure balanced seals.

Face: Car/SiC, Car/ TC, TC/ TC, SiC/ SiC

Metal Components: SS316

Bellow Components: AM 350/ Inconel 718/ Hast C / Hast B

Secondary Sealing: Grafoil

Pressure(Vacuum) : Up to 20Kg/cm2

Temperature           : 75°C to 425°C

Speed                       : Up to 3600 rpm