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Shanghai Yikesuotuo Sealing Materials Co., Ltd

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Application of TEADIT expanded PTFE tape
Date: 2025-09-09Read: 18
  TEADIT expanded PTFE tapeIt is a high-performance sealing material with a wide range of applications, mainly used in the following scenarios:
Compensation for irregular sealing surfaces:
TEADIT expanded PTFE tape (such as 24 HD, 25 BI models) is made of expanded polytetrafluoroethylene (e-PTFE), which has excellent ductility and flexibility, and can effectively compensate for non parallelism, misalignment, or surface damage of sealing surfaces such as flanges and pipelines. For example, the 24 HD model is particularly suitable for sealing misaligned pipes/flanges or damaged flange surfaces, while the 25 BI model achieves longitudinal and transverse tensile strength balance through multi-directional stretching technology, avoiding width changes during compression and ensuring reliable sealing in narrow sealing areas.
Chemical corrosion resistance environment:
Expanded PTFE tape inherits the chemical corrosion resistance of polytetrafluoroethylene (PTFE) and can withstand strong acids, strong bases, and solvent environments with pH values ranging from 0-14 (except for molten alkali metals and elemental fluorine). This characteristic makes it an ideal choice for sealing corrosive fluids in industries such as chemical, pharmaceutical, and food, such as sealing media containing hydrocarbons, acids, caustic soda, steam, hydrogen peroxide, etc.
Extreme temperature conditions:
This material can work stably in a wide temperature range of -268 ° C to+260 ° C (short-term+315 ° C), and is suitable for low-temperature refrigeration systems, high-temperature steam pipelines, and ultra-low temperature experimental devices. For example, the 24B model maintains sealing performance within the range of -268 ° C to+260 ° C, meeting extreme temperature requirements.
Static equipment sealing:
Expanded PTFE tape is widely used for sealing static equipment such as flanges, pump casings, compressors, heat exchangers, large containers, tank covers, handholes, and inspection holes. Its compression resilience can adapt to small deformations on the flange surface and prevent leakage. For example, the 24 BB model achieves wide sealing through uniaxial expansion technology, which is suitable for sealing special materials such as enamel and glass flanges.
Pressure sensitive and load limited applications:
For scenarios where stress sensitive connections or flange loads are limited, expanded PTFE tapes (such as the 25 BI model) achieve reliable sealing at low loads through low friction coefficient and creep resistance, avoiding leakage problems caused by insufficient pressure in traditional materials.
Food and pharmaceutical industry compliant sealing:
Some models (such as 06-FDA) comply with FDA standards and can be used in sealed scenarios in contact with food, drugs, and drinking water, ensuring safety and no contamination. For example, this model enhances heat transfer performance through mineral oil treatment and mineral filler particles, while meeting hygiene requirements.
Sealing solution for irregular equipment:
  Expanded PTFE tapeIt can be cut into any shape to meet the sealing requirements of non-standard equipment such as reaction vessels, irregular tanks, compensators, etc. Its microporous structure is formed through pressure strip and high-temperature stretching process, which combines flexibility and tensile strength, ensuring the sealing reliability of complex geometric shapes.