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Top Flange Gasket Supplier in China

We are the leading Flange Gasket Manufacturer in China, offering top-standard and heavy-duty gaskets designed for various key sectors, including oil and gas, chemical, and manufacturing, among others. These gaskets are made of high-quality materials and are manufactured to precise specifications to ensure they fit perfectly, seal even the tiniest gaps, and serve their intended purpose in all environments, including the most aggressive ones.

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Flange Gasket
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What is a Flange Gasket?

What is a Flange Gasket?

Flange gaskets likewise called rubber gaskets are mechanical seals that are normally utilized in between two flanges so as to contain the flow of fluids or gasses in pipe systems. typically, they are cloths predominantly of either rubber, or metal or composite; the main essence of ensuring that the seals are firm and leak proof. It is normal for hose gaskets to be utilized in development owing to their structure as distinct from some particular industries such as made up of clean-rooms or hospital pharmaceuticals business.

What is a Flange Gasket Used For?

  • Sealing Flange Connections: Flange gaskets are used to seal joints between flanges, preventing fluid or gas leakage in piping systems.

  • Ensuring System Integrity: They maintain the integrity of pipelines by creating a leak-proof connection, ensuring operational efficiency and safety.

  • Withstanding Harsh Conditions: Designed to endure high pressures, extreme temperatures, and chemical exposure, flange gaskets are suitable for demanding industrial environments.

  • Versatile Industrial Applications: Commonly used in petrochemicals, power plants, water treatment, and other industries requiring secure and reliable flange connections.

What is a Flange Gasket Used For?

Why Choose Our Flange Gasket?

Our flange gaskets are suitable for non-leakage, have a long service life, and are resistant to high temperatures and high pressures. Being made of high-quality materials, these products are used in various industries, including refineries, power plants, and water purification facilities, to name a few, and perform exceptionally well.

Leak-Proof Sealing

Our flange gaskets ensure secure, leak-proof connections, preventing fluid or gas escape in critical industrial applications.

Versatile Applications

Ideal for industries like petrochemicals, power plants, and water treatment, offering reliable sealing across diverse operational needs.

Durable Construction

Made from premium materials, they withstand high pressures, extreme temperatures, and harsh chemical environments for long-lasting performance.

Enhanced Safety and Efficiency

Designed to maintain system integrity, our gaskets ensure operational safety, reduce downtime, and improve overall efficiency.

What do flange gaskets do?

  • Prevent Leakage: Flange gaskets seal joints between flanges, stopping fluids or gases from escaping in pipelines and industrial systems.
  • Ensure System Integrity: They maintain the structural integrity of piping systems, ensuring reliable and efficient operation under various conditions.
  • Withstand Harsh Conditions: Designed to handle high pressures, extreme temperatures, and chemical exposure, flange gaskets perform in demanding environments.
  • Support Industrial Applications: Used in industries like petrochemicals, power plants, and water treatment, they provide essential sealing for critical operations.

How to choose a gasket for a flange?

  • Consider Fluid Compatibility: Choose a gasket material resistant to the fluid's chemical properties to ensure durability and prevent degradation.
  • Evaluate Temperature and Pressure: Select a gasket that can withstand the system's operating temperature and pressure for reliable performance.
  • Assess Gasket Material Properties: Ensure the gasket's physical properties, like hardness and thickness, align with the flange and system requirements.
  • Account for Installation Factors: Proper torque and even pressure during installation are critical to maintaining a secure, leak-proof seal.

Explore Our Types of Flange Gasket

Non-metallic Gaskets

Non-metallic Gaskets

Non-metallic gaskets provide reliable sealing for low-pressure applications, using materials like rubber, PTFE, or graphite for flexibility and durability.

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Semi-metallic Gaskets

Semi-metallic Gaskets

Semi-metallic gaskets combine metal and non-metal materials, offering excellent sealing for high-pressure and high-temperature applications with enhanced durability.

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Metal Gaskets

Metal Gaskets

Metal gaskets are designed for extreme conditions, providing robust sealing in high-pressure, high-temperature environments with superior strength and reliability.

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Flange Gasket Size Specifications Chart: ASME B16.5 Class 150

NPS (inch)Flange OD (mm)Min. Thickness (mm)Raised Face Dia. (mm)No. of BoltsBolt Circle Dia. (mm)Bolt Hole Dia. (mm)
0.58911.235.1460.315.9
110812.742.9469.915.9
215215.792.14120.719.1
319017.51274152.419.1
422919.1157.28190.519.1
627922.4215.98241.322.4
834324269.98298.522.4
1040625.4323.91236225.4
1248328.638112431.825.4
1453330.2412.812476.328.6
1659731.8469.916539.828.6
1863533.3533.416577.931.8
2069935.1584.22063531.8
2481338.1692.220749.335.1
The data above is for reference purposes. We manufacture a full range of flanges covering all schedules and pressure classes (150, 300, 600, 900, 1500, 2500) and comply with various international standards including EN 1092-1, DIN, BS, and JIS. For complete technical data sheets or custom requirements, please contact our engineering team.

Key Application Industries of Flange Gasket

Oil and Gas Industry

Flange gaskets ensure leak-proof sealing in pipelines, valves, and pressure vessels under high-pressure and high-temperature conditions.

Chemical and Pharmaceutical Industries

Used to seal equipment handling aggressive chemicals, gases, and corrosive fluids, ensuring safety and operational efficiency.

Power Generation

Flange gaskets maintain stable pressure and temperature in boilers, turbines, and pumps, critical for power plant operations.

HVAC Systems

Provide airtight seals in ductwork, cooling units, and heat exchangers, enhancing energy efficiency and system reliability.

Why Choose Our Flange Gasket?

  • Superior Leak Prevention: Our flange gaskets ensure reliable, leak-proof sealing, maintaining system integrity and preventing fluid or gas escape.

  • Durable and Long-Lasting: Crafted from premium materials, they withstand high pressures, extreme temperatures, and harsh chemicals for extended durability.

  • Versatile Applications: Designed for diverse industries like oil and gas, power generation, and HVAC, meeting varied operational needs.

  • Enhanced Safety Standards: Our gaskets comply with stringent safety regulations, ensuring secure operations in critical environments.

  • Cost-Effective Solutions: With long-lasting performance and minimal maintenance, our gaskets reduce operational costs and enhance system efficiency.

Flange Gasket

What Our Client Says

Understand from our clients what they say about doing business with us and the unique value addition we provide.

"These flange gaskets have been a game-changer for our operations. Their durability and leak-proof performance ensure our systems run smoothly, even under extreme conditions. Highly recommended!"
Emily Zhang
Chemical Plant Manager
"I’ve used these flange gaskets in multiple HVAC projects, and they never disappoint. Reliable sealing, easy installation, and long-lasting performance make them my go-to choice!"
Customer reviews
James Carter
HVAC System Engineer

Comprehensive Guide to Flange Gasket

Comprehensive Guide to Flange Gasket

Latest Blog Posts

Maintain Inventiveness by Following The Blog for the Latest Best Practices, Techniques, Innovations, and Insights in the Field.

Types of Gaskets Used in Flanges
Why do we use gaskets in flange?

Satisfying the needs of differential industrial disciplines, flange connections of various types require gaskets to meet the needs of integrity maintenance and efficiency. They are a critical part of...

August 20, 2025

Partner With a Trusted Flange Gasket Manufacturer

To obtain a reliable sealer for your industrial applications, consider partnering with a well-established company that specializes in manufacturing flange gaskets. Our high-quality safety gaskets have been designed for long-term use in industries such as oil and gas, chemical production, and air conditioning. Make safety a priority in your operations by reducing operational expenses through our optimized procedures. Contact us today to discuss your project.

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  • Langfang City, Shandong Province, China
  • +86-13373362088
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