Leading PCTFE sealing component solution!
Extremely low temperature and high sealing stability
Are you facing these sealing challenges?
In high vacuum or high pressure gas systems, do you suffer from the "cold flow" or "creep" phenomenon that plastics are prone to, resulting in dimensional drift and seal failure?
Are you struggling to find a partner with rigorous machining experience, fearing the dilemma of unstable product yields and substandard precision?
Just look for Cheng Hsin Seal King to help you!
Cheng Hsin Seal King PCTFE molding team focuses on the development of fluorine plastic parts for extremely low temperature, high sealing and high stability environments, and the high-performance materials including PCTFE are widely used in vacuum systems, low-temperature equipments, gas control and chemical industry related fields.
The team is familiar with the performance of PCTFE in low-temperature, high-pressure, and high-vacuum environments, and understands its properties of low gas permeability, near-zero water absorption, and high stiffness, and can assist you in selecting materials and structures from the design stage to create critical components with high reliability.
Core Advantages of Chengxin Sealing King
In-depth knowledge of key material properties of PCTFE
Specialized design and machining experience for low-temperature and high-sealing requirements.
One-stop service from material selection, structural design to mass production.
PCTFE Product Service Overview:
1.Precision machined parts production
2. PCTFE high sealing / low permeability parts design assistance
3. Material and Workmanship Recommendations
4. Small quantity trial and specification verification
PCTFE application areas are perfectly presented:
Cryogenic and Refrigeration Equipment
High Vacuum and Gas Systems
Chemical and corrosive media treatment
Highly Reliable Precision Instruments and Aerospace-Related Components
| Project | General Engineering Plastic/Rubber | Seal King PCTFE Precision Processing Solution |
|---|---|---|
| Low temperature performance and dimensional stability | Easy to harden at low temperature, uneven shrinkage, size drift. | Extremely low temperatures maintain rigidity and dimensional stability |
| Gas and water vapor permeability | High permeability and poor long-term airtightness | Extremely low gas and water permeability, suitable for high airtightness requirements. |
| Cold flow and long term pressure changes | Easy to creep and cold flow, long-term pressure deformation is obvious | Small cold flow, high rigidity, suitable for long-term pressure parts. |
| Material Characterization and Design Recommendations | Estimates based mostly on general plastic experience | Familiar with the characteristics of PCTFE and able to advise on sealing and vacuum design. |
| Processing and Project Support Methods | Mainly for single-piece processing | Project-based support from material, design, trial to mass production |
Customer Testimonials
Increased seal life for low temperature gas systems
The factory used ordinary plastic and rubber seals in low temperature gas system, and saw the problem of hardening, cracking and leaking under the low temperature environment for a long time. After cooperating with Hsin to add PCTFE customized seating rings and sealing components, we successfully extended sealing life and reduced maintenance and machine downtime.

Industrial Gas Supplier / Chan Operations & Maintenance Engineer
Vacuum equipment hermetic stability improvement
Our vacuum equipment factory after long time operation, equipment airtightness gradually decline, change to use the PCTFE as the key sealing parts of the sealing king of the mid-day heat, still maintain a stable vacuum degree under long time operation, it is really powerful!

Advanced Medical Equipment/Electro-Mechanical Technician (Lin)
Chengxin Sealing King Service Process:
Understand your application environment, including key metrics such as temperature range, pressure, dielectric type, and airtightness/vacuum, to clarify the goals and limitations of introducing PCTFE.
Evaluates the suitability of PCTFE for existing designs and materials, and makes recommendations on structural design, tolerances and seal fit to avoid unsuitable design thinking.
Provide quotations and time schedules based on part size, complexity, machining methods and estimated quantities.
Produce samples and adjust dimensions, tolerances, or structural design for optimal results in conjunction with product testing for airtightness, low temperature, pressure resistance, and life.
After confirming the specifications, standard processing parameters and inspection items are established to ensure the consistency of dimensions and performance between batches and to facilitate long-term replenishment and maintenance.
For the most stable PCTFE, look for Cheng Hsin Seal King!
If your system needs to operate under "extremely low temperature, high airtightness and high stability" conditions for a long period of time, but has been troubled by air leakage, material brittleness or dimensional drift problems, Cheng Hsin Seal King's PCTFE Precision Processing Service can help you minimize the risk from the source of material and design.
Please contact Cheng Hsin Seal King immediately, welcome to provide us with the drawings, operating conditions and current problems encountered, together to assess whether it is suitable to introduce PCTFE, and how to design and process, in order to truly give full play to the value of high performance of the PCTFE, so that your equipment is more reliable, and more peace of mind.