PCTFE Perfect Seal Material
Are you facing these sealing challenges as a product manager?
Do seals fail frequently in highly corrosive media such as strong acids, alkalis, or oxidizers, requiring more chemically inert, long-lasting protection?
In your quest for high precision equipment with micron-level blocking, do you need a precision sealing solution with extremely low compression set and permanent deformation that ensures zero leakage?
Let Xin Seal King help you to solve the problem completely from the material side.
Top quality materials
Customized Design Capabilities
Professional Technical Consultation
Rapid Delivery Service
Six Core Advantages of Seal King
Extensive experience in the industry
Advanced Processing Technology
Complete Testing Capability
Flexible Inventory Management
Competitive Pricing
Perfect after-sales service
PCTFE Material Characteristics and Technical Advantages
What is PCTFE?
Polychlorotrifluoroethylene (PCTFE) is a high-performance fluoroplastic material made from the polymerization of a trichloroethylene monomer. Compared to other fluoroplastics such as PTFE, PCTFE has superior mechanical strength, lower gas permeability, and excellent dimensional stability.
While maintaining the excellent chemical stability of fluoroplastics, it provides better rigidity and abrasion resistance, which is particularly suitable for demanding applications that require precision sealing and long-term reliability. Its unique molecular structure gives the material excellent barrier properties, making it an ideal choice for high-end industrial applications.
PCTFE's Eight Superior Properties
Superior chemical resistance
Wide temperature range
Extremely low permeability
Excellent mechanical strength
Good dimensional stability
Low Emission Characteristics
Low friction coefficient
Good insulating properties
Wide range of industrial applications
Semiconductor Industry
PCTFE seals provide excellent chemical resistance and low contamination in wafer fabrication, chemical vapor deposition (CVD), and etching processes. They are suitable for vacuum chamber sealing, valve sealing, pump sealing and other critical parts to ensure process cleanliness and yield.
- Wafer Process Equipment Sealing
- Vacuum System O-ring
- Chemical Transportation Lines
Chemical Process
PCTFE gaskets and seals provide reliable leak protection during the production, storage and transportation of highly corrosive chemicals. Ideal for use in reactors, pumps, valves, piping connections, etc., they dramatically reduce maintenance costs and downtime.
- Chemical Reactor Seals
- Pipe Flange Gasket
- Pump Mechanical Seals
Medical Equipment
PCTFE provides FDA-compliant clean seal solutions in medical devices and pharmaceutical equipment. Its biocompatibility, sterilizability and low extractables make it an ideal material for drug-contact parts to ensure patient safety.
- Drug Delivery System
- Medical Equipment Seals
- Bioreactor
Low Temperature Engineering
PCTFE maintains excellent flexibility and sealing performance in ultra-low temperature applications such as liquefied natural gas (LNG), liquid nitrogen, and liquid helium. It is suitable for low-temperature valves, tanks, conveyor systems and other equipment to ensure safety and efficiency.
- LNG Equipment Seals
- Low Temperature Valve Seat
- Ultra-low temperature experimental equipment
Comparison of PCTFE vs.
| Performance Indicators | PCTFE | PTFE | FKM | EPDM | NBR |
|---|---|---|---|---|---|
| Chemical resistance | Advantages | Advantages | favorable | moderate | moderate |
| Temperature Range | -240~200°C | -200~260°C | -20~200°C | -50~150°C | -40~120°C |
| Mechanical Strength | 高 | 中 | 高 | 中 | 中 |
| Gas Permeability | extremely low | 低 | moderate | 高 | 高 |
| Dimensional Stability | Advantages | favorable | favorable | moderate | moderate |
| processability | favorable | difficulties | favorable | liable (to) | liable (to) |
| (manufacturing, production etc) costs | 高 | mid-to-high | 中 | 低 | 低 |
Complete Product Lineup and Specifications
Standard Seals
- O-ring series:Conforms to AS568, JIS, GB and other standards, wire diameter 1.0-8.0mm, inner diameter 1-500mm, various hardness options.
- Spacer series:Flat gaskets, metal covered gaskets, wave gaskets, thickness 0.5-10mm, can be customized according to the drawing.
- V-ring / U-cup:Dynamic sealing applications, excellent wear resistance and low friction characteristics
- Back and support rings:Use with other materials to enhance sealing system performance
Customized Processing Service
- CNC precision machining:Complex shapes, high precision parts, tolerance ±0.05mm
- Molding:High volume production for cost-effectiveness
- Assembly services:Multi-component sealing system pre-assembly
- Surface treatment:Chemical etching, plasma treatment to improve adhesion
We offer a full range of products and services, from standard components to fully customized products. Whether you need a single component or a complete sealing system solution, our engineering team can provide expert support to ensure the perfect fit for your application.
Quality Certification and Technical Standards
01.
ISO 9001:2015
The international quality management system is certified to ensure that every step from raw material procurement to finished product delivery meets strict quality standards, and a complete quality traceability system is established.
02.
RoHS / REACH
Complying with the requirements of the European Union's environmental directives and containing no hazardous substances, we provide environmentally friendly product choices to help our customers meet the requirements of environmental regulations.
03.
FDA Compliance
Medical and food contact grade materials are compliant with FDA CFR 177.1550 to ensure product safety and biocompatibility, and relevant test reports are available.
04.
Material Test Report
Provide complete material property test reports (CoA), including mechanical properties, chemical compatibility, thermal properties and other data, to meet customer verification needs.
Customer Success Stories
Semiconductor Equipment Manufacturer
The PCTFE O-ring provided by Cheng Hsin Seal King perfectly solves our sealing problems in high temperature and high pressure processes. With stable product quality and professional technical support, they are our long-term reliable partner. Their in-depth understanding of industry needs makes the cooperation process very smooth.

- Experienced Purchasing Engineer, Taiwan Leading Manufacturer
Chemical Equipment Company
After evaluating a number of suppliers, we chose Cheng Hsin Seal King's PCTFE sealing solution. Not only is the product performance excellent, but we are also impressed by their quick response and customization capability. During the three years of cooperation, the seal failure rate has been reduced by 80%, which has significantly improved the reliability of the equipment.

- Technical Director, multinational chemical company
Medical Device Manufacturer
The medical industry has very high requirements on material cleanliness and stability, and Cheng Hsin Seal King's PCTFE products fully meet our stringent standards. From material selection consultation to delivery, the whole process is professional and efficient. The technical documents and certification information provided by them are also very complete, greatly simplifying our verification process.

- Quality Assurance Manager, Medical Equipment Company