industrial grade flange gaskets

Cheng Hsin specializes in providing industry-leading industrial-grade flange gasket solutions, using the most advanced materials and precision manufacturing processes to ensure that excellent sealing performance can still be achieved under extreme operating conditions. It effectively prevents leakage, significantly reduces downtime, extends the service life of equipment, and enhances overall production efficiency and operational safety.

Have you experienced the cost of seal failure?

Do flange gaskets frequently fail prematurely under high temperatures and pressures or in corrosive environments, resulting in unplanned shutdowns?
After installing the flange gasket, do you still need to spend a lot of time adjusting the bolt torque over and over again, which increases the maintenance cost?
Do you have difficulty in selecting the most suitable flange gasket due to the lack of professional technical support in the face of complicated working conditions?

Let Xin Industrial Seal King help you!

With over 20 years of experience in sealing technology, we understand that every industry and every application has unique sealing requirements. From material selection and dimensional design to installation guidance, we provide comprehensive technical support to ensure you choose the most suitable gasket solution.

Our engineering team has extensive field experience and is capable of providing customized sealing designs for harsh operating conditions, such as high temperatures, high pressures, and corrosive media. Whether in petrochemical refining, chemical processing, power generation, or the food and pharmaceutical industries, we have a proven track record of successful applications and comprehensive technical data to support our solutions.

Chengxin's Advantages

Guaranteed quality ingredients

Using internationally certified raw materials, each batch of products undergoes stringent quality inspection to ensure stable and reliable material performance. Complete material certificates and test reports are available for traceability.

Precision Manufacturing

Advanced CNC machining equipment is introduced to ensure dimensional accuracy and surface flatness. Strict process control allows each piece of gasket to meet the highest standards.

Professional Technical Support

Our experienced engineering team provides selection advice, installation guidance and troubleshooting services. We not only sell products, but also your sealing technology partner.

Improve Inventory Supply

Common specifications are always in stock, and special specifications are quickly customized. Perfect logistics network ensures timely delivery, so that your production will not be delayed due to waiting.

Flange Gasket Product Line

Chengxin offers a wide variety of flange gaskets designed to meet a range of industrial challenges. Whether in extreme environments or for precision applications, we provide reliable sealing solutions to ensure the safe and efficient operation of equipment.

Semiconductor Valve Cover Seals

Designed specifically for high-purity semiconductor environments, it offers exceptional chemical resistance and ultra-low leaching rates, ensuring contamination-free manufacturing processes. Precision machining meets cleanroom standards, ensuring stable equipment operation and product quality.

High-Pressure Flange Seals for the Petrochemical Industry

We provide ultra-durable, weather-resistant flange gaskets designed for the high-temperature, high-pressure, and corrosive operating conditions found in the petrochemical industry. These gaskets effectively prevent leaks, extend equipment service life, and enhance production safety and efficiency.

Sealing Gaskets for Equipment Tube Sheets

Used for sealing tube sheets in heat exchangers, pressure vessels, and other equipment. It can withstand extreme temperature fluctuations and media corrosion, providing excellent thermal stability and long-lasting sealing performance to ensure stable operation of equipment under harsh conditions.

Product specifications and technical parameters

We offer a full range of products that meet international standards

Chengxin Industrial offers a diverse range of static O-rings to meet the demanding requirements of applications ranging from general industrial use to extreme conditions. Our comprehensive product lineup—from standard sizes to custom solutions—strictly adheres to international quality standards, ensuring you receive the most reliable sealing components.

Material Hardness (Shore A) Temperature Range (°C) Pressure Range (bar) Key Features
NBR (Nitrile Rubber) 70-90 -30 to 120 Up to 100 Excellent resistance to oil and fuel; highly versatile
FKM (Fluorinated Rubber) 70-90 -20 to 200 Up to 200 Excellent resistance to high temperatures and chemical corrosion
EPDM (Ethylene-Propylene-Diene Monomer) 70-80 -40 to 150 Up to 150 Excellent resistance to weathering, ozone, steam, and acids and alkalis
FFKM (Perfluoroelastomer) 70-85 -25 to 300+ Up to 250+ Exceptional chemical and heat resistance, suitable for the most demanding environments

We are committed to ensuring that every O-ring delivers optimal performance in its specific application. If you have special requirements or are unsure how to select the most suitable material and specifications, please contact Chengxin’s team of experts; we will provide detailed technical consultation and customized services.

Successful application cases in various industries

Petrochemical refining industry

After a large refinery adopted our metal-wound gaskets, flange leakage incidents were reduced by 85%, and annual maintenance cost savings exceeded $3 million.

Employment:

  • Medium: Crude oil, light oil
  • Temperature: 280-350°C
  • Pressure: PN100-PN150

Chemical Process Industry

Chemical plants use PTFE-coated gaskets in strong acid and alkali piping systems, which perfectly solves the sealing problem of corrosive media and extends the service life by 3 times.

Employment:

  • Medium: Sulfuric acid, hydrochloric acid
  • Temperature: room temperature to 150°C
  • Pressure: PN16-PN40

Power Generation Industry

Expanded graphite gaskets are used in high-temperature steam lines in thermal power plants to effectively withstand thermal cycling shocks and ensure long-term stable operation.

Employment:

  • Medium: Superheated steam
  • Temperature: 450-550°C
  • Pressure: PN250-PN420
Successful Cases

Testimonials

We have been using your metal-wound gaskets in the piping system of our high-temperature cracker for more than two years without any leakage problem. Not only the quality of the product is excellent, but also the professionalism of the technical support team is impressive, and they can provide the most suitable solutions for our special working conditions.

Taiwan Petrochemical Corporation Equipment Manager

In the past, we were often troubled by flange leakage problems, which not only affected production but also increased maintenance costs. After changing to your recommended expanded graphite gaskets, the leakage incidents have been greatly reduced, and the maintenance workload has also been significantly reduced. More importantly, the installation training you provided enabled our technicians to master the correct construction methods.

Maintenance Supervisor of a chemical plant

Sealing in high temperature steam systems has always been a challenge for us, as traditional gaskets often fail due to heat cycling. Using your high-temperature gasket solution not only extends the service life, but also improves the reliability of the overall system. The professional after-sales service gives us peace of mind.

Power Plant Engineer

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.

Take Immediate Action

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:

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?