Metal Bellow Seal US MBG/US MBVT
Metal Bellow Seal US MBG/US MBVT
Metal Bellow Seal US MBG/US MBVT
Metal Bellow Seal US MBG/US MBVT is a very robust and reliable sealing solution for demanding industrial applications. These seals are engineered with a flexible, corrosion-resistant metal bellow, with no need for dynamic O-rings, ensuring that the performance is always consistent under any pressure and temperature conditions. Excellent resistance to thermal shocks and reduction in wear assure longer service life of equipment.
Ideal for handling a wide range of fluids, including corrosive chemicals, high-temperature liquids, and slurry mixtures, these seals are perfect for pumps, mixers, compressors, and agitators in industries such as chemical processing, oil & gas, and power generation. The US MBG model is designed for general applications, whereas the US MBVT variant is specifically designed for high-temperature and vacuum conditions.
With precision engineering and superior material quality, the US MBG/US MBVT seals provide unmatched reliability, improving operational efficiency while lowering maintenance costs.
Key Design Features
- Inherently balanced
- No shaft fretting
- Fits on ANSI, ISO & DIN pumps
- Available in AM350, Hast-C & Inconel
- Alloy-20 construction
- Convertible to cartridge design
Operating Range & Limits
- Pressure : Upto 20kg
- Size: 25mm to 100mm
- Temperature : US MBVT (-70°C to 200°C), US MBG (-70°C to 350°C)
- Speed : 2900 rpm
Materials of Construction
- Metal Parts For US MBG : SS316, Hast-C
- Metal Parts For US MBVT : SS316, Carp-42
- Bellows For US MBG : Hast-C, Inconel, AM-350
- Bellows For US MB VT: Inconel, AM-350
- Elastomers For US MBVT : Viton, EPR, PTFE, FFKM, STV, GFT, FEP
- Elastomers For US MBG : Flexible Graphite
- Rotary Face : SiC, TC, Carbon
- Stationary Face : SiC, TC
Manufacturing Standards & Quality Inspection
Every mechanical seal is manufactured with optical-grade precision at our Mohan Nagar, Ghaziabad facility.
ISO 9001:2015 Certified
Manufactured in strict adherence to international quality management and material traceability.
Monochromatic Light Inspection
100% seal faces verified with optical flats under helium light (< 2 light bands flatness).
Hydrostatic Testing
Hydrostatically pressure-tested to 1.5x working pressure for zero operational leakage.
24-48 Hr Fast Dispatch
Emergency breakdown dispatch across Delhi NCR, Gujarat, Maharashtra, and worldwide.
Metal Bellow Seal US MBG/US MBVT - Frequently Asked Questions
Metal bellows seals eliminate dynamic elastomeric O-rings. Because elastomers degrade or melt above 200°C, the welded edge AM-350 or Inconel metal bellows acts as both the spring and the secondary seal, operating safely up to 400°C.
Yes. They are the industry benchmark for thermic fluid pumps, hot bitumen, thermal oil heaters, and boiler circulation equipment.
Request Quotation & Technical Fitment
Share your equipment specifications. Our engineering team will recommend the optimal seal metallurgy, face pairings, and provide a formal price quote within 2 business hours.
Sealing Solutions Across Key Industries
Automotive Components
Textiles
Pharmaceuticals
Chemical Processing
Sugar
Distillation
Food & Beverage
Steel
Power & Energy
Paper
Oil & Gas
Petrochemical Plants
Paint
Pumps & Compressors
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