Cheng Hsin Seal King - The Perfect Solution Kit for Marine Seal Designs
Have you encountered the three major pain points of marine sealing problems...?
Let Xin Seal King help you to solve the problem at root!
International Standards
Our products are designed, manufactured and performed to the highest international standards, providing the highest levels of reliability and safety for your vessels. Keeping your fleet moving around the world and complying with local regulations.
Expertise
In the face of extreme sea conditions and high cost of stoppage, with over 20 years of professional experience, Cheng Hsin is able to accurately diagnose all kinds of complex ship sealing challenges. To protect your navigation safety and operation efficiency.
Rapid delivery
We know that time is money, and with a sound warehousing network and efficient logistics management, we can quickly respond to your emergency needs and significantly reduce downtime. We can deliver high-quality seals in the shortest possible time to ensure that your voyage is worry-free.
Complete Sealing Components Product Line Coverage
O-Rings and Gaskets
We provide O-rings, gaskets, washers and other basic sealing components in various sizes and materials for flange connections, pipe joints and other applications.
Mechanical Seals
Mechanical seals specially designed for pumps, compressors and other rotating equipment to ensure long-term stable operation.
Hydraulic Sealing System
Includes piston seals, rod seals, dust rings and other special seals for hydraulic systems, which are high pressure and wear-resistant.
Valve Sealing Components
It is suitable for all kinds of marine valve seals, packings, valve seats and other key parts to ensure reliable valve sealing.
Excellent application results
Number of service vessels
Service life enhancement
Customer Satisfaction
Lower maintenance costs
Versatile material selection
Different applications require different sealing materials. We offer a wide range of high-performance material options, from standard NBR and EPDM to advanced FFKM and PTFE, to ensure that the most suitable solution is found for all temperatures, pressures and media.
Application Scene Overview
Main and Auxiliary Systems
- Main engine cylinder liner seal
- Booster Seal Assembly
- Generator Sealing System
- Air Compressor Seal Parts
Hydraulic and piping systems
- Servo Hydraulic System
- Palletizer Seals
- Pipe Flange Gasket
- Quick Connect Seal
Deck and Cabin Equipment
- Hatch Cover Seal
- Door & Window Seal
- Cargo Compartment Sealing System
- Ventilation Duct Sealing
We can provide timely and professional products and services for both newbuilding vessels and replacement of spare parts for operating vessels. We have sufficient stock of products, and we can deliver the common specifications immediately, and special specifications can be customized and produced in the shortest possible time.
Strict quality control process
Raw Material Inspection
All raw materials are subject to strict incoming inspection to ensure compliance with international standards and regulations.
Process Monitoring
Multi-point quality control is implemented during the production process, and each critical process is recorded by a person for inspection.
Performance Test
The finished product has to go through a number of inspection items such as dimensional measurement, hardness test and sealing performance verification.
Certified Traceability
Each batch is accompanied by complete material certificates and test reports to ensure full traceability.
Packaging Protection
Moisture-proof and dust-proof packaging is used to ensure that the product is not damaged during transportation and storage.
Compliance with international standards and regulations
DNV Norwegian Classification Society
The products meet the requirements of DNV technical specifications and have obtained type approval certificates.
ABS American Bureau of Shipping
ABS has passed strict product testing and factory audits and is listed on the Approved Supplier List.
Lloyd's Register
Conforms to LR technical standards for UK and Commonwealth registered ships.
CCS China Classification Society
Passed the CCS product certification, which meets the specification requirements of China-registered ships.
International Standard Certification
In addition to classification society certification, our products also meet the requirements of international standards such as ISO 9001 Quality Management System and ISO 14001 Environmental Management System.
Success Stories
After replacing with mid-daylight high-performance seals, the frequency of main engine maintenance for our fleet has been reduced significantly, saving more than 30% in annual maintenance cost, and the professional support from the technical team has also made us very satisfied.

International Shipping Company
The quality of the sealing parts supplied by Xin is stable and reliable, and the delivery is on time and in full compliance with the requirements of classification societies. They are our long-term partner in new shipbuilding projects.

Large shipyards
From O-rings to mechanical seals, the product line of Cheng Hsin is very complete, allowing us to make one-stop purchase. Their technicians also assisted us in solving a number of difficult sealing problems.

Ship Repairing Plant
Why choose Bearing Seal King?
At your service
Our technical support does not stop at product sales. From the initial needs assessment, program design, to installation guidance, troubleshooting, our team of engineers is always working side by side with you.
All of our team members have rich background in marine engineering and are familiar with the operating principles and common problems of various marine systems. No matter what kind of sealing technology problems you encounter, we can provide professional and timely solutions.
On-site Technical Services
Engineers are available to visit shipyards or ship sites for technical surveys and installation guidance.
Remote Technical Consultation
Provide real-time technical support via phone, video, etc.
Training and Education
Organize regular training courses on sealing technology to enhance the professional competence of the customer team.
Rapid Response Supply Chain
Sufficient stock
Commonly used seals are always in stock to ensure immediate availability and minimize your waiting time.
Fast delivery
In cooperation with major logistics providers, we offer a variety of delivery methods, including express and ocean freight, to flexibly meet demand.
Emergency Support
For urgent needs, we provide expedited service, the fastest shipment within 24 hours, to solve your urgent needs.
Start a Premier Marine Sealing Program Today
Let us provide you with the best sealing solution
Whether you are a ship owner, a shipyard, or a marine maintenance company, we can provide you with professional and reliable marine sealing parts and technical support. Contact us today and let our experienced engineers customize the most suitable sealing solution for you.