Welcome To Our Precision Gasket Industry

No.67,Xinhua Road, Xiaolin Town,

Cixi City,Zhejiang,China 315300

Call Us

+86-13566064802
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Choosing the Right Gasket

Our company specializes in the production of high-quality sealing products, including gaskets, packing, 
and other critical sealing components.
High-Temp Asbestos-Free Gasket for Valves​

Non-asbestos gasket is a sealing material made by adding special adhesives and a little packing to it, then roll and sulfureted. It is a replacement of asbestos gasket. Non-asbestos gasket has better strength, elasticity and supper strong anti-penetrate performance. And it is product with environment protection material.

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Food-Grade Pure PTFE Gasket for Equipment​

PTFE gasket is made by cutting PTFE stick, pipe and sheet into flat shape, V shape gasket or valve annulus. It has 100% PTFE structure. It can bear the most bitter chemical medium, and has good anti-creeping.

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Flexible Rubber Gasket for Pipes​

Rubber gasket is formed by vulcanization once with various of material, any color, all kinds of shape. such as black, white, yellow, red, etc. Rubber gasket with different material has different property, Such as EPDM rubber gasket, Silicone rubber gasket, FKM rubber gasket, etc.

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Heat-Resistant Graphite Gasket for Exchangers​

Gaskets are available to EN 1514-1, ASME B 16.21. Custom dimensions are available on request.

Thickness:1.0mm~ 20.0mm

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Services We Provide

Non-Standard & Drawing-Based Customization
Precision Manufacturing: Translate your CAD drawings (DWG/SOLIDWORKS...
Technical Consultation & Product Matching
Operational Audit: Analyze your、Failure-Preventive Matching、Cost...
Logo Customization Service for Branded Sealing Products
Logo Customization Options:We offer multiple techniques to...

About Us

A Precision Gasket Manufacturer
Established in 2004 as Cixi Xinsheng Sealing Factory, we have evolved into Ningbo Dongheng Sealing Co., Ltd. in 2020, building on over 20 years of expertise in manufacturing high-quality sealing solutions.

Why Choose Us

Our company is a professional sealing gasket manufacturer, has more than 20 years of development, the main products are spiral wound gasket,Kammprofile gasket,ring joint gasket, PTFE gasket and gland packing etc...
 OEM/ODM Capabilities
 Technical Consultation Services
 Emergency Order Handling

Our Industries

We take pride in delivering reliable and durable solutions tailored to meet the demanding requirements of various industries, such as oil & gas, chemical processing, power generation, and manufacturing.
Petroleum
Natural Gas
Chemical Processing
Metallurgy
Power Generation
Manufacturing
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If you want to learn more about our manufacturing capabilities, you can click on the avatar in the scene, or accept my invitation!
Latest News & Updates
March 05, 2026

Is your heat exchanger at risk of leakage? The importance of choosing the right spiral wound gasket cannot be overstated. In this article, we will dive into the application requirements and material selection for these gaskets, ensuring long-lasting performance in plate heat exchangers.

March 05, 2026

Is your system at risk of leaks due to poor sealing? Choosing the right Spiral Wound Gasket is crucial for ensuring a reliable seal in high-pressure and high-temperature applications. In this article, we’ll explore how to select the perfect gasket for your pump system and mechanical seal. You’ll discover essential tips for evaluating pressure, temperature, and material compatibility to enhance performance.

March 05, 2026

Oil valve leaks under high pressure can lead to costly downtime and safety risks. But what if a simple gasket could prevent these issues? Spiral Wound Gaskets are designed to provide robust sealing in high-pressure valve systems.

WhatsApp / Tel

+8613566064802

Address

No.67,Xinhua Road, Xiaolin Town,Cixi City,Zhejiang,China 315300
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