US-TB/TBR
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The US-TB and US-TBR mechanical seals are designed for applications involving corrosive chemicals, acids, and reactive process fluids. The seals utilize PTFE and GFT composite bellows that provide excellent chemical resistance and eliminate the need for dynamic elastomers. The US-TB version features a replaceable rotary seal face, while the US-TBR design incorporates an integral seal face construction. These seals are widely used in pumps and rotating equipment operating in chemical processing plants, fertilizer units, and other industries handling aggressive media. |
Key Features
- Outside mounted design
- No dynamic elastomers
- Hydraulically balanced construction
- Replaceable rotary face in TB design
- Integral seal face in TBR design
Operating Range
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Pressure
TB up to 6 kg/cm²
TBR up to 8 kg/cm²
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Temperature
-45°C to 120°C
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Speed
Up to 2900 rpm
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Shaft Size
19 mm to 100 mm
Materials
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Bellows
PTFE + GFT Composite
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Metal Parts
SS316, Hastelloy C, Alloy-20
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Elastomers
PTFE, GFT
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Rotary Face (TB)
Carbon, Silicon Carbide, GFT
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Rotary Face (TBR)
GFT
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Stationary Face
Silicon Carbide, Ceramic
Application
Chemical processing plants
Fertilizer manufacturing units
Petrochemical processing systems
Acid and corrosive fluid pumps
Chemical transfer pumps
Industrial mixing and agitation systems
Products FAQ`s
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.
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.
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.
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.
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.
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.
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.
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.
