Mechanical Seal Manufacturers in Mumbai, India | Cosmos Seals

Metal Bellows

Product Code: MB03   Semi Cartridge Mechanical Seal

DESCRIPTION

The Cosmos Metal Bellow Semi-Cartridge Mechanical Seal is a robust, welded or edge-welded bellow design, eliminating the need for dynamic O-rings. It is ideal for high-temperature and corrosive applications where elastomers may fail. The semi-cartridge arrangement ensures easy installation while remaining cost-effective compared to full cartridge seals.

FEATURES
  • No dynamic elastomers – suitable for high-temperature and vacuum.
  • Welded or formed metal bellows – flexible, pressure-balanced sealing.
  • Corrosion-resistant bellows material – usually SS316L, AM350, Hastelloy, Inconel, etc.
  • Available in single, double, and cartridge designs.
  • Axial movement compensation via bellows flexure.
ADVANTAGES
  • No fretting damage (no dynamic O-rings)
  • Handles thermal expansion
  • Compact axial design
  • Ideal for hazardous, viscous, or polymerizing media
Metal Bellows MB03 | Cosmos Seals
SEAL FACE MATERIAL
  • Carbon, Silicon Carbide, Tungsten Carbide
BELLOWS
  • Hastelloy-C, AM350, Alloy 20
ELASTOMERS
  • Graphite foil, PTFE (only static), FKM
METAL PARTS DETAIL
  • SS316, Hastelloy C, Duplex, Monel
Applications
  • Refinery & Petrochemical Processes
  • High-Temperature Oil & Gas Services
  • Chemical Pumps
  • Thermal Fluid Systems
  • Power Plants
  • Aggressive Corrosive Media
Applications Details
  • Petrochemical
  • Pharmaceutical
  • Oil & Gas
  • Paper & Pulp
  • Food Processing (with special face materials)
  • Chemical Processing
Parameter Standard Value / Range
Diameter 25 mm to 150 mm
Max.Pres Up to 25 bar
Temperature -40°C to +400°C
Velocity 25 m/s
Direction of Rotation Independent of rotation