In industrial environments, pump sealing plays an important role in maintaining operational efficiency, preventing fluid leakage and supporting equipment reliability. Handling highly corrosive chemicals, abrasive liquids and aggressive process fluids requires mechanical seals designed to withstand demanding operating conditions.
The Sumika Type 11 Teflon Bellow Seal is a non-metallic, externally mounted mechanical seal designed for highly corrosive, clean or abrasive liquids at low to medium pressure. Its PTFE bellow construction and carefully selected sealing materials make it suitable for various industrial applications where conventional metallic seals may face chemical compatibility challenges.
Available through Hatta Trading & Services, this sealing solution is designed to support reliable fluid containment in demanding industrial operations.
A Type 11 Teflon Bellow Seal is a mechanical sealing solution that uses a flexible PTFE bellow as its secondary sealing element.
Unlike conventional designs that may expose metallic components to aggressive process fluids, the Sumika Type 11 features fully non-metallic wetted parts. Its externally mounted configuration keeps the springs and other metallic hardware outside the process fluid, helping reduce the risk of chemical corrosion.
The seal is designed for applications involving highly corrosive chemicals, clear liquids and abrasive fluids within its specified operating limits.
The Type 11 Teflon Bellow Seal features non-metallic wetted components designed to resist exposure to acids, alkalis and solvents.
Its PTFE bellow and selected sealing face materials help support applications where chemical compatibility is an important consideration.
The external mounting arrangement keeps the springs and metallic hardware outside the process fluid.
This configuration helps protect metallic components from direct chemical exposure and supports sealing applications involving aggressive liquids.
The seal incorporates a multiple-spring arrangement to provide uniform spring loading across the sealing faces.
Consistent spring loading helps maintain contact between the seal faces during operation.
The Type 11 seal is designed to operate independently of the direction of rotation.
This feature simplifies installation considerations and helps reduce the need for rotation-specific seal arrangements.
The flexible PTFE bellow supports sealing performance while accommodating shaft movement and misalignment.
This design contributes to reliable fluid containment in suitable pump and agitator applications.
The Sumika Type 11 Teflon Bellow Seal has the following operating ratings:
| Parameter | Specification |
|---|---|
| Maximum pressure | 9 kg/cm² |
| Maximum speed | Up to 12 m/s |
| Maximum temperature | 120°C |
| Mounting | External |
| Secondary seal material | PTFE bellow |
These specifications represent the stated operating limits of the seal. Actual suitability depends on the process fluid, operating conditions and application requirements.
The Type 11 mechanical seal incorporates different materials for its sealing faces, hardware and secondary sealing components.
The combination of these materials supports applications requiring chemical resistance and reliable sealing performance.
Material selection should be evaluated according to the chemical composition, concentration and operating temperature of the process fluid.
The Sumika Type 11 Teflon Bellow Seal is suitable for selected industrial pumping applications involving corrosive, clean or abrasive liquids.
Chemical Injection and Dosing: Chemical injection and dosing systems handle process chemicals that may require specialised sealing materials.
The Type 11 seal can be considered for suitable chemical injection and dosing pumps operating within its specified pressure, speed and temperature limits.
Acid and Caustic Transfer: Acid and caustic transfer applications require mechanical seals with appropriate chemical compatibility.
The Type 11’s non-metallic wetted construction and PTFE bellow make it a potential sealing solution for compatible fluids.
Produced Water and Effluent Handling: Produced water and industrial effluent handling may involve corrosive or abrasive fluids.
The Type 11 seal is designed for selected applications involving these liquids, subject to operating conditions and material compatibility.
Petrochemical Utilities and Tank Farm Transfer: Petrochemical utilities and tank farm transfer systems require dependable fluid containment during pumping operations.
The externally mounted Type 11 seal can be considered for compatible process fluids in auxiliary and transfer pumps.
Oil and Gas Process Pumps: The Type 11 Teflon Bellow Seal is designed for selected oil and gas auxiliary and process pump applications.
Its suitability depends on the specific fluid characteristics, equipment configuration and operating conditions.
Choosing a suitable mechanical seal can help support equipment reliability and reduce maintenance challenges.
The Sumika Type 11 offers several design advantages:
These features make the Type 11 a suitable option for evaluating sealing requirements in corrosive industrial environments.
Selecting the right mechanical seal requires understanding the application, process fluid and equipment operating conditions.
Hatta Trading & Services supplies industrial products and solutions for demanding applications. The Sumika Type 11 Teflon Bellow Seal is an option for businesses seeking a mechanical seal designed for compatible corrosive and abrasive liquids.
When selecting a seal, consider:
Evaluating these parameters helps determine whether the Type 11 seal is appropriate for the intended application.
The Sumika Type 11 Teflon Bellow Seal is designed for low to medium pressure applications involving highly corrosive, clean or abrasive liquids.
Its fully non-metallic wetted construction, externally mounted arrangement, multiple-spring design and flexible PTFE bellow make it a suitable option for selected chemical processing, oil and gas, petrochemical and wastewater handling applications.
With operating ratings of up to 9 kg/cm² pressure, 12 m/s speed and 120°C temperature, the Type 11 provides a specialised sealing solution for compatible industrial applications.
For additional information about the Sumika Type 11 Teflon Bellow Seal and other industrial sealing solutions, contact Hatta Trading & Services.
Please find the below link for additional information
Kindly contact us for enquiries at: hatta@hatta.ae
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