Leading PCTFE sealing component solution!

Extremely low temperature and high sealing stability

Faced Challenges

Are you facing these sealing challenges?

Is your equipment subjected to low or very low temperatures, where gaskets often become hardened, brittle, or shrink unevenly, resulting in leakage of the sealing medium and posing serious industrial safety risks?

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.

Competitive Advantage

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

We undertake CNC precision machining of PCTFE shaped materials such as rods and plates, which are suitable for seal seats, valve seats, gaskets, ring shaped parts, and structural support parts. For parts with strict requirements on dimensional tolerances, surface quality and geometric stability, the machining strategy and post-processing can be adjusted according to the conditions of use.

2. PCTFE high sealing / low permeability parts design assistance

Vacuum systems, gas control and instrumentation equipment, provide seal structure and fit design recommendations, taking into account the convenience of assembly and long-term stability; depending on the pressure, temperature and media conditions, can be adjusted to the pre-pressure, contact surface width and fit tolerance, to avoid over-compression or under-sealing.

3. Material and Workmanship Recommendations

We can help you compare the performance differences between PCTFE and PTFE, PFA, ETFE and other fluoroplastics, including stiffness, cold flow, gas permeability and temperature range, to find the most suitable solution. Depending on the part shape and production volume, we recommend machining, extrusion, compression molding or other combinations of processes.

4. Small quantity trial and specification verification

We support a small number of samples and multiple rounds of adjustments to match your product's airtightness, low-temperature, and pressure resistance tests; and after verification, we will establish standard processing conditions, inspection specifications, and file management to facilitate subsequent long-term replenishment.

PCTFE application areas are perfectly presented:

Cryogenic and Refrigeration Equipment

PCTFE maintains rigidity and dimensional stability at extremely low temperatures. It is suitable for seals, valve seats and supporting elements in low-temperature equipment, such as liquid nitrogen and liquid oxygen, and avoids the problems of brittle cracking and deformation of ordinary plastics.
banner4

High Vacuum and Gas Systems

With extremely low gas permeability and near-zero hygroscopicity, PCTFE is ideally suited for seating and sealing parts of vacuum equipment, gas lines, and precision valves to maintain high airtightness over long periods of time.
c2

Chemical and corrosive media treatment

PCTFE has excellent resistance to most chemicals and oxidizing media, and can be used in special chemical installations and instrumentation where both chemical resistance and dimensional stability are required.

Highly Reliable Precision Instruments and Aerospace-Related Components

PCTFE is one of the most commonly used precision plastics for precision seats, gaskets and structural supports in environments where low permeation, low outgassing, high stability and radiation resistance are required.
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

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:

01
Demand Inventory and Condition Analysis

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.

02
Design and Material Feasibility Assessment

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.

03
Quotation and Project Kickoff

Provide quotations and time schedules based on part size, complexity, machining methods and estimated quantities.

04
Trial and Performance Verification

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.

05
Mass Production Introduction and Quality Management

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.

Take Immediate Action

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.

Free Technical Consultation

Our senior engineers will analyze your application requirements and provide professional material selection recommendations.

Sample Testing Services

Free samples are available for your hands-on testing and verification to confirm performance meets expectations.

Quick Quote Delivery

Quotes completed within 24 hours; rush orders delivered in 2-3 days to support your project timeline.
Are you ready to get started?

Ready to get started?