Are you in the market for custom size o-rings and feeling overwhelmed by the options? You’re not alone! With countless factories in China, finding the right partner can be a daunting task. Understanding the top manufacturers is crucial, as it can significantly impact the quality and reliability of your products. Imagine having access to the best options that not only meet your specifications but also enhance your project’s success. Ready to simplify your search? Join us as we explore the leading custom size o-ring factories in China and help you make an informed decision!
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
– Can be prone to cutting, twisting, and breaking if used improperly
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:
– Used in smartphones, watches, automotive parts, medical devices, food machinery,…
– Suitable for applications requiring dust and water resistance.
Pros:
– High precision and quality control in manufacturing.
– Wide range of materials and custom solutions available.
Cons:
– Limited information on specific performance characteristics.
– Potentially higher cost for custom solutions.
Custom O-Rings, Custom Molded O-Ring China Manufacturer – Savvy
Product Details: Custom O-Rings manufactured by Savvy, suitable for various applications and available in different materials and sizes.
Technical Parameters:
– Material: NBR, HNBR, FKM/Viton, Silicone, EPDM, PTFE, FFKM
– Hardness: Shore A 60-90
Application Scenarios:
– Hydraulics & Pneumatic
– Oil and Gas
– Semiconductor Processing
– Aerospace
– Food Processing
– Water Filtration
– Electronic Products
– Machinery Fabrications
– Plastic Sealing
– Automotive
– Medical Equipment
Pros:
– Customizable to specific dimensions and shapes
– High-quality materials with strong cost control
Cons:
– Higher price compared to standard O-Rings
– Longer lead times due to custom manufacturing
Custom O Ring Manufacturing in China with Quick Tooling Development and …
O Rings Manufacturer | O Rings Supplier – Hongjie Rubber Seal
Product Details: Wholesale O Rings in Bulk from Hongjie, a professional O rings manufacturer in China since 2000, offering custom O rings wholesale services.
Technical Parameters:
– One-stop O rings OEM/ODM solution.
– Various international O-Ring standards with most sizes already tooling.
Application Scenarios:
– Automotive industry.
– Hydraulic and pneumatic applications.
Pros:
– Affordable factory direct price.
– Certificated compounds to meet specific markets.
Cons:
– Limited information on specific technical parameters.
– Potential variability in raw material quality.
Top Quality custom o-rings made from China Leading custom o-rings …
Product Details: Custom O-Rings are precision-engineered seals tailored to specific sealing needs, offering unmatched quality and reliability. Available in various materials (Nitrile, Viton, EPDM, Silicone, etc.), sizes (micro to large), thicknesses, cross-sections, and colors. Meets industry standards like AS568, JIS, ISO 3601.
Technical Parameters:
– Material (Nitrile, Viton, EPDM, Silicone, etc.), Hardness (Shore A 20 to 90)
– Size (From micro to large dimensions), Temperature Range (-60°C to 250°C, depend…
– Inner Diameter (ID), Outer Diameter (OD), Cross-Section (CS), Tolerances
– Chemical Compatibility, Pressure Rating, Compression Set, Certification and Stan…
Application Scenarios:
– Automotive (engine gaskets, fuel systems, air conditioning)
– Aerospace (hydraulic systems, fuel lines, actuators)
– Industrial (pumps, valves, compressors, couplings)
– Medical (sterilizable equipment, diagnostic devices, fluid delivery systems)
– Food & Beverage (processing equipment, seals for liquid dispensers, container cl…
Pros:
– Perfect Fit: Tailored to exact specifications for optimal performance.
– Enhanced Durability: High-quality materials withstand extreme conditions.
Cons:
– Higher initial cost compared to standard O-rings.
– Generic placeholder for cons
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: plus or minus 3-5A
– Dimensions and tolerances follow ISO3601 standards
Application Scenarios:
– Sealing various products and parts requiring resistance to water, oil, and high…
– Static and dynamic applications in machinery
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
Custom Silicone O-ring Manufacturers in China – TOGOHK
Product Details: Silicone O-rings are widely used in various sealing systems, suitable for both static and dynamic seals. They are made from 100% food-grade high-elasticity silicone material, BPA-free, and can be customized to fit any shape.
Technical Parameters:
– Temperature range: -30°C to 392°F (200°C)
– Available in various sizes, shapes, and colors
Application Scenarios:
– Food processing and pharmaceutical manufacturing
– Used in water heaters, filters, blenders, coffee makers, and electronic instrume…
Pros:
– Excellent heat, corona, and chemical resistance
– Customizable design and low minimum order quantities
Cons:
– Limited to specific temperature ranges
– Potential for degradation in extreme environments
Custom O-Rings – McMaster-Carr
Product Details: Custom O-Rings available in various sizes, materials, and specifications.
Technical Parameters:
– System of Measurement: Inch, Metric
– Width options: 0.040″ to 1″
– Cross Section Shape: D, Rectangle, Round, Square, X
– Material options: Aramid, Carbon Fiber, Rubber, etc.
– Hardness: Durometer 50A to 90A
– Maximum Temperature: Less than 250° F to 600° F or greater
– Minimum Temperature: -250° F or less to greater than 0° F
– Maximum Pressure: Less than 500 psi to 3,000 psi or greater
Application Scenarios:
– Used in sealing applications to create leak-resistant seals.
– Suitable for various industries including food, automotive, and manufacturing.
Pros:
– Customizable sizes and materials to fit specific needs.
– Wide range of hardness and temperature resistance.
Cons:
– Potentially higher cost for custom specifications.
– Limited availability of certain materials or sizes.
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.
Technical Parameters:
– Standard and metric sizes
– Low minimum order quantities (MOQs)
Application Scenarios:
– Automotive industry
– Aerospace and military applications
Pros:
– Wide range of products
– Customization available
Cons:
– Potentially high costs for small orders
– Quality may vary by manufacturer
Related Video
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| 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 – Can be prone to cutting, twisting, and breaking if used improperly | savvyrubber.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 in manufacturing. – Wide range of materials and custom solutions available. | – Limited information on specific performance characteristics. – Potentially higher cost for custom solutions. |
| Custom O-Rings, Custom Molded O-Ring China Manufacturer – Savvy | Custom O-Rings manufactured by Savvy, suitable for various applications and available in different materials and sizes. | – Customizable to specific dimensions and shapes – High-quality materials with strong cost control | – Higher price compared to standard O-Rings – Longer lead times due to custom manufacturing | savvyrubber.com |
| Custom O Ring Manufacturing in China with Quick Tooling Development and … | rubberproducer.com | |||
| O Rings Manufacturer | O Rings Supplier – Hongjie Rubber Seal | Wholesale O Rings in Bulk from Hongjie, a professional O rings manufacturer in China since 2000, offering custom O rings wholesale services. | – Affordable factory direct price. – Certificated compounds to meet specific markets. | – Limited information on specific technical parameters. – Potential variability in raw material quality. |
| Top Quality custom o-rings made from China Leading custom o-rings … | Custom O-Rings are precision-engineered seals tailored to specific sealing needs, offering unmatched quality and reliability. Available in various mat… | – Perfect Fit: Tailored to exact specifications for optimal performance. – Enhanced Durability: High-quality materials withstand extreme conditions. | – Higher initial cost compared to standard O-rings. – Generic placeholder for cons | www.customproc.com |
| 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 |
| Custom Silicone O-ring Manufacturers in China – TOGOHK | Silicone O-rings are widely used in various sealing systems, suitable for both static and dynamic seals. They are made from 100% food-grade high-elast… | – Excellent heat, corona, and chemical resistance – Customizable design and low minimum order quantities | – Limited to specific temperature ranges – Potential for degradation in extreme environments | www.togohk.com |
| Custom O-Rings – McMaster-Carr | Custom O-Rings available in various sizes, materials, and specifications. | – Customizable sizes and materials to fit specific needs. – Wide range of hardness and temperature resistance. | – Potentially higher cost for custom specifications. – Limited availability of certain materials or sizes. | www.mcmaster.com |
| 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 | – Potentially high costs for small orders – Quality may vary by manufacturer | hongjusilicone.com |
Frequently Asked Questions (FAQs)
What are custom size o-rings?
Custom size o-rings are rubber seals designed to fit specific dimensions and applications. Unlike standard o-rings, which come in fixed sizes, custom o-rings can be tailored to meet your unique requirements, ensuring a perfect fit for your project.
Why should I choose a factory in China for o-rings?
Choosing a factory in China can offer competitive pricing, a wide range of materials, and advanced manufacturing capabilities. Many Chinese factories specialize in producing high-quality o-rings, making them a popular choice for businesses looking to save costs without compromising quality.
What materials are commonly used for o-rings?
O-rings can be made from various materials, including rubber, silicone, and fluorocarbon. The choice of material depends on the application, temperature range, and chemical exposure. Discussing your specific needs with the factory can help you select the best material for your o-rings.
How long does it take to produce custom o-rings?
Production time for custom o-rings can vary based on complexity and order size. Typically, it takes a few weeks from design approval to delivery. However, many factories offer expedited services if you need your o-rings sooner, so be sure to communicate your timeline.
What should I consider when selecting a factory?
When selecting a factory, consider their experience, quality control processes, and customer reviews. It’s also important to check their certifications and capabilities to ensure they can meet your specific requirements. Open communication and responsiveness are key to a successful partnership.
