Are you in the market for high-quality O-rings and wondering where to find the best manufacturers in China? With countless factories vying for your attention, it’s crucial to know which ones stand out. Comparing the top O-ring makers not only saves you time but also ensures you get the best products for your needs. Imagine having access to reliable suppliers that guarantee quality and efficiency, giving you peace of mind in your projects. Ready to discover the leading O-ring factories that can elevate your business? 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 such as injection, extrusion, and compression molding, with materials like nitrile rubber, silicone, EPDM rubber, and Fluorocarbon (Viton).
Technical Parameters:
– Standard and metric sizes
– Low minimum order quantities (MOQs)
Application Scenarios:
– Automotive industry
– Aerospace industry
Pros:
– Wide range of products
– Customization available
Cons:
– Potential quality variations among manufacturers
– Limited information on specific product performance
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 accuracy tolerance up to 0.02mm
Application Scenarios:
– Smartphones
– Medical devices
Pros:
– High precision and quality control
– Wide range of materials available
Cons:
– Limited information on specific applications
– Potentially higher cost for custom solutions
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 – 90
Application Scenarios:
– Used in hydraulic and pneumatic transmission systems.
– Suitable for sealing 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.
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:
– High-quality molded rubber products
– Wide range of applications
Cons:
– Limited information on specific product performance
– Potential variations in material properties
Custom O-ring Manufacturer and Wholesale Supplier – Hongju
Product Details: Custom O-rings and high-temperature O-ring seals manufactured from certified materials for various applications.
Technical Parameters:
– Hardness tolerance: ±3-5A
– Dimensions and tolerances follow ISO3601 standards
Application Scenarios:
– Sealing for engines and pumps
– Static and 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
Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司
Product Details: O-rings, Rubber strip, molded parts, Spring seals designer and manufacturer
Technical Parameters:
– Various sizes and materials available
– High temperature resistance up to 300℃
Application Scenarios:
– Oil and Gas
– Food Beverage Pharmaceutical and Medical
Pros:
– High quality elastomer seals
– Customizable solutions for different industries
Cons:
– Limited information on specific product dimensions
– Potentially higher cost for custom orders
Quality O Rings Seal & Rubber O Ring factory from China
Product Details: Rubber O Rings, Rubber Seals, Rubber Grommets, Rubber Stoppers, Rubber Gaskets, and Custom Rubber Parts manufactured by Splendid Rubber Products (Shenzhen) Co., Ltd.
Technical Parameters:
– Hardness: 20-90 Shore-A
– Material: EPDM, NBR, Silicone, etc.
Application Scenarios:
– Automotive industry for sealing and shock absorption
– Medical and food industries requiring strict hygiene standards
Pros:
– High-quality manufacturing with ISO13485 certification
– Wide range of products suitable for various industries
Cons:
– Potentially higher costs for custom solutions
– Limited availability of certain specialized materials
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.
Technical Parameters:
– Materials: FKM, NBR, Silicone, EPDM, NR, PU, CR, HNBR, SBR, IIR, SEP, Fluorosili…
– Sizes: Various sizes available for different applications
Application Scenarios:
– Used in automotive industry
– Used in aerospace industry
Pros:
– Wide range of materials available
– Custom production options
Cons:
– Quality may vary between manufacturers
– Potentially longer lead times for custom orders
O-rings Manufacturers – China O-rings Factory & Suppliers
Product Details: O-rings are circular rubber rings with a circular cross-section, primarily used for preventing leakage of liquid and gas media under static conditions. They can also serve as dynamic sealing elements for axial reciprocating motion and low-speed rotational motion.
Technical Parameters:
– Available in various materials to suit different conditions
– Initial sealing ability generated by compression during installation
Application Scenarios:
– Static sealing applications
– Dynamic sealing applications with speed and pressure limitations
Pros:
– Effective and economical sealing element for designers
– Bidirectional sealing capability
Cons:
– Limited by speed and pressure at the sealing point
– Volume of O-ring squeezed into the gap must be less than the maximum allowable v…
China Customized O-ring Making Machine Manufacturers, Suppliers …
Product Details: This automatic ring making machine is composed of automatic feeding, automatic straightening, automatic ring forming, automatic welding, and automatic unloading process.
Technical Parameters:
– Type: 2-6mm, Rated Voltage: 380V, Power: 0.75KW, Weight: 300kg, Size: 11085135…
– Type: 2-8mm, Rated Voltage: 380V, Power: 1.50KW, Weight: 350kg, Size: 13095155…
Application Scenarios:
– Manufacturing O-rings for various industrial applications.
– Custom ring production based on customer specifications.
Pros:
– Fully automatic process increases efficiency.
– Customizable machine options available.
Cons:
– Requires specific voltage and frequency adjustments for different regions.
– Potential extra charges for customization.
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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 such as injec… | – Wide range of products – Customization available | – Potential quality variations among manufacturers – Limited information on specific product performance | hongjusilicone.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 |
| 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 |
| 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 | – High-quality molded rubber products – Wide range of applications | – Limited information on specific product performance – Potential variations in material properties | www.sealsmanufacturer.com |
| Custom O-ring Manufacturer and Wholesale Supplier – Hongju | Custom O-rings and high-temperature O-ring seals manufactured from certified materials for various applications. | – 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 |
| Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司 | O-rings, Rubber strip, molded parts, Spring seals designer and manufacturer | – High quality elastomer seals – Customizable solutions for different industries | – Limited information on specific product dimensions – Potentially higher cost for custom orders | www.oring-seal.com |
| Quality O Rings Seal & Rubber O Ring factory from China | Rubber O Rings, Rubber Seals, Rubber Grommets, Rubber Stoppers, Rubber Gaskets, and Custom Rubber Parts manufactured by Splendid Rubber Products (Shen… | – High-quality manufacturing with ISO13485 certification – Wide range of products suitable for various industries | – Potentially higher costs for custom solutions – Limited availability of certain specialized materials | www.oringsseal.com |
| Top 10 O-Rings Manufacturers in China – News – qlrubber.com | O-rings manufactured by various companies in China, including custom and standard options. | – Wide range of materials available – Custom production options | – Quality may vary between manufacturers – Potentially longer lead times for custom orders | www.qlrubber.com |
| O-rings Manufacturers – China O-rings Factory & Suppliers | O-rings are circular rubber rings with a circular cross-section, primarily used for preventing leakage of liquid and gas media under static conditions… | – Effective and economical sealing element for designers – Bidirectional sealing capability | – Limited by speed and pressure at the sealing point – Volume of O-ring squeezed into the gap must be less than the maximum allowable v… | www.bodiseals.com |
| China Customized O-ring Making Machine Manufacturers, Suppliers … | This automatic ring making machine is composed of automatic feeding, automatic straightening, automatic ring forming, automatic welding, and automatic… | – Fully automatic process increases efficiency. – Customizable machine options available. | – Requires specific voltage and frequency adjustments for different regions. – Potential extra charges for customization. | www.hanxin-machinery.com |
Frequently Asked Questions (FAQs)
What types of o-rings can I find in Chinese factories?
You can find a wide variety of o-rings in Chinese factories, including standard sizes, custom designs, and different materials like rubber, silicone, and polyurethane. Many factories specialize in producing o-rings for various industries, such as automotive, aerospace, and plumbing.
How do I choose the right o-ring manufacturer in China?
To choose the right manufacturer, consider their experience, production capacity, quality certifications, and customer reviews. It’s also helpful to request samples and communicate your specific needs to ensure they can meet your requirements.
What is the typical lead time for o-ring production in China?
The lead time for o-ring production can vary, but it generally ranges from 2 to 6 weeks, depending on the complexity of the order and the manufacturer’s workload. Always confirm the timeline with your chosen factory before placing an order.
Are there minimum order quantities (MOQs) for o-rings?
Yes, most Chinese manufacturers have minimum order quantities, which can vary widely. Some may accept small orders of a few hundred pieces, while others might require thousands. It’s best to discuss MOQs directly with the factory to find a suitable option.
How can I ensure the quality of o-rings from Chinese factories?
To ensure quality, request samples before placing a large order, check for relevant quality certifications, and consider third-party inspections. Building a good relationship with the manufacturer and maintaining clear communication about your quality expectations can also help.
