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US MB (Single Seal, Balanced Cartridge Design, Metal Bellow Seal)

US MB (Single Seal, Balanced Cartridge Design, Metal Bellow Seal)
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Series US MB is an edge welded metal bellows single seal designed for high temperature to moderate pressure applications typically for the petrochemical industry as well as refineries.

This seal has been engineered with a low coefficient of thermal expansion in the shell material and features a uniquely designed bellows profile. These features minimize seal face distortion across the operating temperature range, ensuring reliable performance under demanding conditions.

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Key Features

  1. Independent of direction of rotation

  2. Designed for extreme high temperature applications

  3. Grafoil as secondary sealing

  4. Single & Double ply bellow options

Operating Range

  1. Pressure: 30KG

  2. Size: Upto 100mm

  3. Temp: Upto 350°C

  4. Speed: 2900 rpm

Application

  1. Refineries


Products FAQ`s
1. What are mechanical seals and why are they important?

Mechanical seals prevent leakage of liquids or gases between a rotating shaft and a stationary housing in equipment such as pumps, compressors, and mixers. They help maintain process efficiency, reduce maintenance costs, and protect equipment from contamination or fluid loss.

2. What type of applications are US-TB and US-TBR mechanical seals used for?

US-TB and US-TBR seals are designed for handling highly corrosive and chemically aggressive fluids. They are commonly used in chemical processing plants, fertilizer industries, acid handling systems, and pumps operating with reactive or corrosive media.

3. What is the difference between US-TB and US-TBR mechanical seals?

The US-TB seal features a replaceable rotary seal face, allowing easier maintenance and replacement. The US-TBR version uses an integral rotary face design, providing a compact structure suitable for certain corrosive applications.

4. What materials are used in US-TB / TBR mechanical seals?

These seals are manufactured using chemically resistant materials such as PTFE and GFT composite bellows, Silicon Carbide, Ceramic, Carbon, and corrosion-resistant metals like SS316 and Hastelloy C.

5. What operating conditions can these seals handle?

US-TB / TBR mechanical seals are designed for shaft sizes from 19 mm to 100 mm, temperatures from −45°C to 120°C, and speeds up to 2900 rpm, depending on application requirements.

6. Are these mechanical seals suitable for corrosive chemicals?

Yes. The seals are specifically designed for extremely corrosive environments. The use of PTFE based bellows and chemically inert materials makes them suitable for acids, salts, oxidizing agents, and reactive organic compounds.

7. Can these seals be customized for specific equipment?

Yes. Unique Seal Engineering Co. provides customization based on shaft size, operating pressure, temperature, and process fluid to ensure proper sealing performance for different industrial applications.

8. How can I request a quote or technical assistance?

You can request a quote by submitting the inquiry form on this page or contacting our technical team with details such as shaft size, operating conditions, and the type of fluid being handled.

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