Are you curious about where the best O-ring manufacturers in China are located? With countless factories vying for your attention, knowing which ones stand out can make all the difference for your projects. Comparing these top factories not only helps you find quality products but also ensures you get the best value for your investment. Imagine having access to reliable suppliers that meet your specific needs, saving you time and money. Ready to discover the leading O-ring factories in China? Let’s dive in and explore your best options!

Top 10 O-ring Manufacturers and Suppliers in China (2025)

Product Details: O-rings are circular cross-section sealants used to prevent leakage of liquids and gases. They are manufactured using various techniques and materials, including nitrile rubber, silicone, EPDM rubber, and fluorocarbon.

Technical Parameters:
– Available in standard and metric sizes
– Customizable materials including silicone, EPDM, NBR, and Viton

Application Scenarios:
– Used in automotive, aerospace, and industrial applications
– Suitable for both static and dynamic sealing conditions

Pros:
– Wide range of products and materials available
– Customization options for specific applications

Cons:
– Potential limitations in minimum order quantities
– Quality may vary between manufacturers

O-Rings, Rubber Seals – Best China Manufacturer & Supplier – Savvy

Product Details: High-Quality Rubber O-Rings manufactured by Savvy, available in various materials including NBR, FKM, and Silicone.

Technical Parameters:
– Temperature Range: -70°C to 220°C
– Standard Hardness: Shore A 60 to 90

Application Scenarios:
– Used in hydraulic and pneumatic transmission systems
– Sealing applications for various fluids such as air, water, and oil

Pros:
– Low manufacturing cost and convenient use
– Self-sealing effect with no need for periodic adjustment

Cons:
– Difficult to achieve zero leakage in dynamic seals
– Improper use can lead to cutting, twisting, and breaking

Top 10 O-Rings Manufacturers in China – News – qlrubber.com

Product Details: O-rings manufactured by various companies in China, including custom and standard options in multiple materials.

Technical Parameters:
– Various sizes available
– Materials include silicone, Viton, EPDM, NBR, and more

Application Scenarios:
– Used in automotive and aerospace industries
– Applicable in medical devices and construction

Pros:
– High-quality manufacturing
– Custom solutions available

Cons:
– Limited information on specific product performance
– Potential variability in material quality

Top 10 O-Ring Manufacturers and Suppliers in China (2024)

Product Details: O-rings are circular cross-section sealants used to prevent leakage of liquids or gases in various applications.

Technical Parameters:
– Common materials include NBR, FKM, Silicone, EPDM, and HNBR.
– Temperature range typically from -60°C to +260°C.

Application Scenarios:
– Used in automotive and aerospace industries.
– Suitable for both static and dynamic sealing applications.

Pros:
– Versatile and effective for various sealing needs.
– Custom sizes and shapes available from many manufacturers.

Cons:
– Minimum order quantities can vary significantly.
– Quality may depend on the manufacturer and material used.

Custom Rubber Seals & O-rings Manufacturer | Haisun Rubber

Product Details: HAISUN manufactures precision O-rings such as NBR, HNBR, AMQ, FKMT, EDPM, ACM, and CR, and supplies standard O-ring parts and O-ring kits.

Technical Parameters:
– O-ring dimension accuracy tolerance up to 0.01mm
– Rubber seals accurate tolerance up to 0.02mm

Application Scenarios:
– Smartphones
– Automotive parts

Pros:
– High precision and quality control
– Wide range of materials available

Cons:
– Limited information on specific applications
– Potentially higher cost for custom solutions

Custom O-ring Manufacturer and Wholesale Supplier – Hongju

Product Details: Custom silicone rubber O-rings and high-temperature O-ring seals for engines, pumps, cylinders, connectors, valves, etc.

Technical Parameters:
– Hardness tolerance: ±3-5A
– Dimensions and tolerances follow ISO3601 standards

Application Scenarios:
– Static applications
– Dynamic applications

Pros:
– Inexpensive and effective sealing solution
– Wide selection of stock items and customization capabilities

Cons:
– Limited information on specific material properties
– Potential variability in manufacturing time based on quantity

Top 10 Silicone O-Ring Manufacturers and Suppliers in China(2024)

Product Details: Silicone O-Rings, Rubber O-Rings, Viton O-Rings, Food Grade O-Rings, Gasket and Seals, Custom O-Rings & Seals

Technical Parameters:
– High temperature resistance
– Chemical compatibility

Application Scenarios:
– Outdoor applications
– Static and dynamic applications

Pros:
– Excellent weathering properties
– Customization capabilities

Cons:
– Limited availability in some regions
– Potential higher costs for custom orders

DKK Sealing Technology Co., Ltd. – O-rings & Sealing rings from China …

Product Details: O-rings, Sealing rings, Sealing gasket, Rubber custom parts

Technical Parameters:
– Material: Fluorine rubber, NBR, FKM, EPDM, PU, Silicone
– Temperature Resistance: High temperature resistant

Application Scenarios:
– Automotive industry
– Industrial machinery

Pros:
– High durability
– Wide range of applications

Cons:
– Limited temperature range for some materials
– Potential for wear over time

Quality FKM O Rings & NBR O Ring factory from China

Product Details: Quality FKM O Rings & NBR O Ring factory from China. Various types of rubber seals including O rings, gaskets, and customized rubber parts.

Technical Parameters:
– Material: NBR / Nitrile Rubber, FKM, Silicone
– Hardness: 30-80 Shore A, 70±5 Shore

Application Scenarios:
– Used in hydraulic and pneumatic systems to prevent leaks.
– Applications in automotive, aerospace, oil and gas, and medical industries.

Pros:
– Versatile sealing solutions suitable for various applications.
– Easy installation and replacement.

Cons:
– Requires regular inspection for wear and damage.
– Material selection is critical for specific application requirements.

China O-Rings, X-Rings, Back Up Rings Suppliers and Manufacturers …

Product Details: O-rings, X-rings, Back Up Rings, NBR O-Rings, Encapsulated O-Rings, Custom Rubber Parts, O Ring Kits

Technical Parameters:
– Material: NBR, EPDM, Silicone, FKM
– Sizes: Standard and Metric

Application Scenarios:
– Automotive industry
– Medical equipment

Pros:
– Wide range of applications
– High-quality materials

Cons:
– Limited customization options
– Potential for material degradation over time

Related Video

Comparison Table

Company	Product Details	Pros	Cons	Website
Top 10 O-ring Manufacturers and Suppliers in China (2025)	O-rings are circular cross-section sealants used to prevent leakage of liquids and gases. They are manufactured using various techniques and materials…	– Wide range of products and materials available – Customization options for specific applications	– Potential limitations in minimum order quantities – Quality may vary between manufacturers	hongjusilicone.com
O-Rings, Rubber Seals – Best China Manufacturer & Supplier – Savvy	High-Quality Rubber O-Rings manufactured by Savvy, available in various materials including NBR, FKM, and Silicone.	– Low manufacturing cost and convenient use – Self-sealing effect with no need for periodic adjustment	– Difficult to achieve zero leakage in dynamic seals – Improper use can lead to cutting, twisting, and breaking	savvyrubber.com
Top 10 O-Rings Manufacturers in China – News – qlrubber.com	O-rings manufactured by various companies in China, including custom and standard options in multiple materials.	– High-quality manufacturing – Custom solutions available	– Limited information on specific product performance – Potential variability in material quality	www.qlrubber.com
Top 10 O-Ring Manufacturers and Suppliers in China (2024)	O-rings are circular cross-section sealants used to prevent leakage of liquids or gases in various applications.	– Versatile and effective for various sealing needs. – Custom sizes and shapes available from many manufacturers.	– Minimum order quantities can vary significantly. – Quality may depend on the manufacturer and material used.	www.rubber-tools.com
Custom Rubber Seals & O-rings Manufacturer	Haisun Rubber	HAISUN manufactures precision O-rings such as NBR, HNBR, AMQ, FKMT, EDPM, ACM, and CR, and supplies standard O-ring parts and O-ring kits.	– High precision and quality control – Wide range of materials available	– Limited information on specific applications – Potentially higher cost for custom solutions
Custom O-ring Manufacturer and Wholesale Supplier – Hongju	Custom silicone rubber O-rings and high-temperature O-ring seals for engines, pumps, cylinders, connectors, valves, etc.	– Inexpensive and effective sealing solution – Wide selection of stock items and customization capabilities	– Limited information on specific material properties – Potential variability in manufacturing time based on quantity	hongjusilicone.com
Top 10 Silicone O-Ring Manufacturers and Suppliers in China(2024)	Silicone O-Rings, Rubber O-Rings, Viton O-Rings, Food Grade O-Rings, Gasket and Seals, Custom O-Rings & Seals	– Excellent weathering properties – Customization capabilities	– Limited availability in some regions – Potential higher costs for custom orders	hongjusilicone.com
DKK Sealing Technology Co., Ltd. – O-rings & Sealing rings from China …	O-rings, Sealing rings, Sealing gasket, Rubber custom parts	– High durability – Wide range of applications	– Limited temperature range for some materials – Potential for wear over time	dkkrubber.goldsupplier.com
Quality FKM O Rings & NBR O Ring factory from China	Quality FKM O Rings & NBR O Ring factory from China. Various types of rubber seals including O rings, gaskets, and customized rubber parts.	– Versatile sealing solutions suitable for various applications. – Easy installation and replacement.	– Requires regular inspection for wear and damage. – Material selection is critical for specific application requirements.	o-ringsseals.com
China O-Rings, X-Rings, Back Up Rings Suppliers and Manufacturers …	O-rings, X-rings, Back Up Rings, NBR O-Rings, Encapsulated O-Rings, Custom Rubber Parts, O Ring Kits	– Wide range of applications – High-quality materials	– Limited customization options – Potential for material degradation over time	www.sealsmanufacturer.com

Frequently Asked Questions (FAQs)

What types of products do oring factories in China manufacture?

O-ring factories in China typically produce a wide range of sealing products, including rubber O-rings, custom seals, gaskets, and other related components. These products are used in various industries such as automotive, aerospace, electronics, and plumbing, ensuring reliable sealing solutions for different applications.

How can I ensure the quality of O-rings from Chinese manufacturers?

To ensure quality, you can request samples before placing a large order, check for certifications like ISO, and read reviews from other customers. Establishing clear communication about your specifications and conducting factory audits can also help maintain quality standards.

What materials are commonly used for O-rings?

Common materials for O-rings include nitrile rubber (NBR), silicone, fluorocarbon (FKM), and EPDM. Each material has unique properties suited for specific applications, such as temperature resistance, chemical compatibility, and flexibility, so choose based on your project requirements.

What is the typical lead time for O-ring production in China?

Lead times can vary based on order size and complexity, but generally, you can expect production to take anywhere from 2 to 6 weeks. It’s best to discuss timelines with your manufacturer early in the process to ensure your needs are met.

Can I customize O-rings for my specific needs?

Yes, many factories in China offer customization options for O-rings. You can specify dimensions, materials, colors, and even packaging. Providing detailed specifications will help the manufacturer create the perfect O-rings for your application.