Seal King - Professional Medical Sealing Solutions
Are you facing the three sealing challenges in the medical device industry?
Let Seal King create the best solution!
The 3 Major Advantages of Chengxin Sealing King
Medical grade certified materials
All series of products are made of medical grade materials that comply with international standards such as FDA, USP Class VI, ISO 10993, etc. to ensure biocompatibility and safety, and are strictly controlled by a complete material traceability system.
Precision Manufacturing
Equipped with advanced CNC machining centers and a clean room production environment with micron tolerance control, each sealing element meets the most stringent quality standards and dimensional accuracy requirements.
Professional Technical Support
With experienced engineering team to provide customized design services, from seal structure design, material selection to testing and verification, to provide a full range of technical advice and rapid response support, is your most reliable partner.
Professional Medical Core Seal Components
Medical O-Ring
Made of silicone, fluorine rubber, EPDM and other medical grade materials to provide excellent sealing performance and chemical compatibility. Complete range of sizes to withstand high temperature sterilization and chemical disinfection.
Flat Spacer
A wide range of thicknesses and materials are available for flanged joints and flat seals. Die-cutting or press molding services are available to ensure dimensional accuracy and edge quality.
Molded seals
Customized molding according to customer's design drawings, including complex shapes of sealing gaskets, dustproof covers, protective sleeves, etc., providing mold design and development services.
Medical Sealing Solutions Applications
Cheng Hsin Seal King's products are widely used in all kinds of medical devices and equipment, from diagnostic instruments to therapeutic devices, from laboratory equipment to surgical instruments, our sealing solutions ensure the reliable operation of the equipment in all kinds of harsh environments.
Diagnostic Imaging Equipment
Vacuum sealing and cooling system sealing for CT, MRI, X-ray machines and other diagnostic imaging equipments to ensure the long-term stable operation of precision instruments.
In Vitro Diagnostic Equipment
Fluid sealing system for blood analyzer, biochemistry analyzer and other testing equipment to prevent sample contamination and cross infection.
Surgical Instruments
Endoscopes, minimally invasive surgical instruments, anesthesia machines, and other equipment are hermetically and hydraulically sealed to ensure surgical safety.
Infusion and dialysis equipment
Precision sealing components for infusion pumps, hemodialysis machines, and other life support equipment to ensure accurate fluid control.
Material Selection and Characterization
Diversified Medical Grade Materials
Choosing the right sealing material is the key to ensuring the reliability of your equipment. We offer a wide range of medical grade certified materials to assist customers in selecting the most suitable sealing solution based on the application environment, contact media, temperature range and other conditions.
Medical Grade Silicone
Excellent biocompatibility and temperature tolerance (-60°C to +200°C) for applications requiring high temperature sterilization.
Fluorine Rubber (FKM/Viton)
Excellent chemical resistance and high temperature resistance, suitable for contact with pharmaceuticals and chemical disinfectants.
Ethylene Propylene Diene Rubber (EPDM)
Good steam and water resistance, suitable for steam sterilization applications.
Polytetrafluoroethylene (PTFE)
Excellent chemical inertness and low coefficient of friction for dynamic sealing and extreme environments.
Customer Success Stories
"Since we started using Chengxin Sealing King's medical-grade O-rings, our fluid sealing issues have been completely resolved, the sample contamination rate has decreased by 85%, and the FDA certification process has gone much more smoothly."

Medium-sized medical device manufacturer
— Ms. Li, Quality Assurance Manager
"After adopting Chengxin Sealing King’s custom-molded seals, the airtightness issues with the surgical instruments were resolved, equipment maintenance frequency decreased by 60%, and surgical safety was significantly improved."

Large Hospital Group
— Mr. Wang, Director of the Equipment Management Office
Choose Chengxin, Choose Peace of Mind
01Professional Consultation
Our engineers will provide a free assessment of your application needs and recommend the most suitable solution.
02Sample Testing
We will provide samples for actual testing to verify that their performance meets your expectations.
03Rapid delivery
We’ll quickly arrange production after your order is confirmed to ensure your project stays on schedule.
04Installation Support
Detailed installation instructions and live online support
05Ongoing Services
Long-term technical support and regular follow-ups ensure the system runs smoothly
Cheng Hsin Seal King not only provides high quality products, but also emphasizes the long-term cooperation relationship with customers. Our technical team is always on standby to assist you in solving all kinds of sealing-related technical problems, ensuring that your equipment always maintains the best running condition.
Get Started on Your Sealing Upgrade Plan Today
Let Chengxin Sealing King help you solve your sealing challenges
No matter what sealing challenges you face, Chengxin Sealing King can provide professional solutions. Our technical team is always ready to assist you, offering comprehensive support from needs analysis to product delivery.
Contact us now to take advantage of the following offers: