Are you looking for the best o-ring manufacturers in China to meet your specific needs? With numerous options available, choosing the right one can be daunting. In this article, we will compare some of the top o-ring dimension factories in China, highlighting their strengths, product varieties, and what sets them apart. Let’s dive in and find the perfect fit for your project.
O-Rings | China – Products | Parker NA
Product Details: Parker O-Rings are circular sealing elements with circular cross-sections, primarily used in static applications. They are available in various materials, including nitrile rubber (NBR), fluorocarbon (FKM, FPM), ethylene propylene rubber (EPDM), hydrogenated nitrile (HNBR), polychloroprene rubber (CR), and silicone (VMQ). Each material has specific applications and compatibility with different fluids and environments. For example, FKM O-Rings are focused on explosive decompression, oil & gas, and dynamic applications, while EPDM O-Rings are suited for food & beverage, chemical processing, and pharmaceutical applications. NBR O-Rings are compatible with oils and gases, and HNBR O-Rings offer good mechanical robustness for automotive and heavy-duty
applications[4].
Pros:
– Wide range of materials available to suit various applications and environments.
– High chemical resistance and compatibility with oils, gases, hydraulic oils, and…
– Ease of service with no smearing or retightening required.
– No critical torque on tightening, reducing the risk of structural damage.
– Cost-effective and lightweight.
– Gradual failure mode that is easily identifiable.
Cons:
– Specific materials have limitations in compatibility with certain fluids and che…
– Some materials may not perform well in extreme temperatures or under specific co…
– Material selection must be carefully considered to match the application require…
French R O-Rings, AS 568A O-Rings, JIS …
Product Details: French R-series O-Rings are a type of metric O-Ring. They are circular bands with a circular cross-section designed to arrest leakages between two faces or over a shaft and hole. These O-Rings are manufactured from various high-quality materials such as NBR, Viton (FKM), Silicone, EPDM, and HNBR. Key specifications include inside diameter, outside diameter, and cross-section dimensions. They are used in both static and dynamic sealing applications across various industries including hydraulic, pneumatic, and automotive.
Pros:
– Wide range of materials available for different chemical and temperature compati…
– Flexible nature accommodates imperfections in mounting parts
– High local stress allows for containing high pressure without exceeding the yiel…
– Available in standard, non-standard, and metric sizes
Cons:
– Requires precise mechanical mounting to ensure predictable deformation and conta…
– Higher cost for specialized or custom O-Rings such as offset parting O-Rings
– Material selection must be carefully matched to the application to avoid compati…
30-80 Durometer colored elastic large diameter o-rings
Product Details: The 30-80 Durometer colored elastic large diameter O-rings are made from high-quality materials such as Nitrile rubber (NBR), Viton, and Silicone. These O-rings have a hardness range of 30 to 80 Shore Durometer and are available in a wide range of sizes with Inner Diameter (ID) from 0.8 to 572 mm and Cross Section from 0.4 to 17.27 mm. They are designed for high temperature resistance, abrasion resistance, and oil resistance. The O-rings are suitable for various applications, including excavators, and are known for their good elastic and resilient properties.
Pros:
– Made from high-quality, durable rubber materials (NBR, Viton, Silicone).
– Wide range of sizes available (ID: 0.8~572mm, Cross Section: 0.4~17.27mm).
– High temperature resistance, abrasion resistance, and oil resistance.
– Good elastic and resilient properties.
– Suitable for various applications including excavators.
– Available in more than 1000 existing sizes, avoiding tooling costs.
Cons:
– No specific cons mentioned in the product details, but general limitations of th…
Parker AS568 O-Rings Size Chart
Product Details: Parker O-Rings are available in various series, including the 2-XXX and 5-XXX series. These o-rings come in a range of sizes with specific dimensions in both inches and millimeters. The 2-XXX series follows AS568B dimensions, while the 5-XXX series includes non-standard sizes that do not fit into the AS568 line. Each size has specified inside diameters, tolerances, and cross-section dimensions. The o-rings are manufactured from various compounds and are designed to accommodate standard ‘AN’ shrinkage materials[1][3][4].
Pros:
– Wide range of sizes available to fit various applications
– Precise dimensions and tolerances for reliable sealing
– Manufactured from different compounds to suit different needs
– Compliance with industry standards such as AS568B and AS568A
Cons:
– Non-standard sizes may have limited availability and higher costs
– Materials with non-standard shrinkage may affect dimensions and tolerances
– Requires careful selection to match the specific application requirements
Custom O-Rings, Custom Molded O-Ring China Manufacturer
Product Details: Savvy Rubber offers custom o-rings designed and produced to meet specific requirements. These o-rings can be customized in terms of cross-section and outline shape. For standard cross-sections outside the usual ranges (e.g., AS568, ISO 3601), custom o-rings are necessary. If the outline shape is not round but square, rectangular, or irregular, it is also considered a custom o-ring. The production process involves creating a mold based on the inner diameter (ID) and cross-section (CS) for round shapes, or a detailed drawing for non-round shapes. Custom o-rings are used in various industries such as hydraulics, oil and gas, semiconductor processing, aerospace,
food processing, water filtration, electronic products, machinery fabrications, plastic sealing, automotive, and medical equipment. Materials include rubber compounds like NBR, FKM, and Silicone, with hardness ranging from Shore A 40 to 90 and various color options available.
Pros:
– Customizable to specific sizes and shapes
– Strong cost control management resulting in low prices while maintaining high qu…
– Wide range of materials and hardness options available
– Versatile applications across multiple industries
– Ability to design and produce according to customer drawings or specifications
Cons:
– Higher price compared to standard o-rings due to the custom nature
– Requires detailed communication and cooperation for non-standard shapes
– May have longer lead times compared to standard o-rings
O-ring size (no tooling charge)
Product Details: Precision Polymer Engineering (PPE) offers a wide range of O-ring sizes and types, including AS 568, DIN 11864, and RJT O-rings. These O-rings are available in various materials such as FFKM, FKM, EPDM, and Silicone, with certifications including FDA, USP, and 3-A 18-03. The O-rings can be fully molded, ensuring tighter cross-section tolerances and no joint weaknesses. They are used in critical applications like compressors, valves, oil & gas equipment, and semiconductor manufacturing.
Pros:
– Fully molded O-rings eliminate joint weaknesses, reducing the risk of premature…
– Tighter cross-section tolerances ensure a proper fit in critical equipment.
– Available in high-performance elastomer grades with excellent chemical resistanc…
– Metal detectable elastomers are available for enhanced consumer safety.
– Manufactured in cleanroom environments to minimize contamination.
Cons:
– Jointed O-rings, though available, may have inherent weak spots at the joints.
– Spliced O-rings can have mismatched joints and wider tolerances on the cross sec…
– Lower density jointed O-rings may have reduced compression set resistance and li…
Ring Size Guide
Product Details: The ring size guide provides methods to determine your ring size accurately. You can measure an existing ring by taking the internal diameter in millimeters and using a ring size chart to find the corresponding size. Alternatively, you can measure your finger circumference using a piece of string or paper, wrapping it snugly around your finger and then measuring the length in millimeters.
Pros:
– Accurate measurements can be obtained using multiple methods (existing ring or f…
– Guides often include charts for international size conversions (US, UK, German,…
– Measuring at the end of the day when fingers are warm ensures the best fit.
Cons:
– Finger size can fluctuate due to temperature and other factors, which may affect…
– Some metals (like titanium and tungsten) and certain ring styles cannot be resiz…
O-Rings, Rubber Seals – Best China Manufacturer & Supplier
Product Details: Savvy manufactures a wide range of o-rings made from various materials including rubber, metal, and other materials. The most commonly used materials are NBR, FKM (Viton), and Silicone. NBR is widely used due to its good properties and low cost. FKM/Viton offers the best comprehensive performance and is used in high-standard sealing equipment. Silicone is often used in medical and food industries due to its FDA compliance, tastelessness, non-toxicity, and resistance to high temperatures and severe cold. The temperature range for these o-rings varies, with Silicone o-rings operating from -70°C to 220°C. The hardness of o-rings is measured in Shore
A, typically ranging from 40 to 90, with Shore A 70 being commonly used. O-rings are available in various colors and can be customized to meet specific needs.
Pros:
– High-temperature and FDA food grade compliance for certain materials
– Wide range of materials available (NBR, FKM/Viton, Silicone, etc.)
– Good wear resistance and oil resistance
– Easy to install and customize
– High precision and fast delivery
– Low mold/tooling cost for custom o-rings
Cons:
– Low hardness o-rings can be prone to peeling, installation damage, extrusion, an…
– High hardness o-rings can be inconvenient to install
– Unique colors may increase cost and require larger MOQ with longer delivery time
China O-Ring Kits Suppliers – NNK Oil Seal
Product Details: The Universal Type O-Ring Kit Box 30 size is a professional-quality assortment of O-rings. It includes 382 pieces of O-rings in 30 of the most popular sizes, both in inches and millimeters. The O-rings are made from commercial-grade nitrile butadiene rubber (NBR) and fluoroelastomer (FKM) materials, offering oil, chemical, and high-pressure resistance. The kit is suitable for various applications, including machines and excavators. The O-rings have a hardness range of 60-90 Shore A and can operate in temperatures from -40°C to 260°C. The kit comes in a practical resealable plastic case and is certified with ISO9001/TS16949 standards.
Pros:
– High-quality materials (NBR and FKM) providing excellent oil and chemical resist…
– Wide range of sizes (30 sizes) to fit various applications
– Suitable for high-pressure and harsh environments
– Durable and long-lasting with UV resistance
– Practical resealable plastic case for storage
– Meets ASTM D 2000 and ISO9001/TS16949 standards
Cons:
– Limited to specific materials (NBR and FKM), which may not be suitable for all a…
– No mention of availability for custom sizes or special orders beyond the standar…
– May require additional backup rings for elevated operating pressure environments
China O-ring GB Standards English PDF List
Product Details: The website provides a list of China national standards for O-rings, denoted by the prefix codes GB and GB/T. GB standards are mandatory, while GB/T standards are recommended. The list includes various standards related to O-rings, such as dimensions, materials, and testing methods. However, the website does not provide detailed product specifications or applications for individual O-ring products.
Pros:
– Provides a comprehensive list of national standards for O-rings in China.
– Distinguishes between mandatory (GB) and recommended (GB/T) standards.
– Includes standards for dimensions, materials, and testing methods.
Cons:
– Does not offer detailed product specifications or applications for individual O-…
– Standards are listed in a general format without specific product details.
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| O-Rings | China – Products | Parker NA | Parker O-Rings are circular sealing elements with circular cross-sections, primarily used in static applications. They are available in various materi… | – Wide range of materials available to suit various applications and environments. – High chemical resistance and compatibility with oils, gases, hydr… |
| French R O-Rings, AS 568A O-Rings, JIS … | French R-series O-Rings are a type of metric O-Ring. They are circular bands with a circular cross-section designed to arrest leakages between two fac… | – Wide range of materials available for different chemical and temperature compati… – Flexible nature accommodates imperfections in mounting parts -… | – Requires precise mechanical mounting to ensure predictable deformation and conta… – Higher cost for specialized or custom O-Rings such as offset p… | www.revataengineering.com |
| 30-80 Durometer colored elastic large diameter o-rings | The 30-80 Durometer colored elastic large diameter O-rings are made from high-quality materials such as Nitrile rubber (NBR), Viton, and Silicone. The… | – Made from high-quality, durable rubber materials (NBR, Viton, Silicone). – Wide range of sizes available (ID: 0.8~572mm, Cross Section: 0.4~17.27mm)… | – No specific cons mentioned in the product details, but general limitations of th… | www.melon-rubber.com |
| Parker AS568 O-Rings Size Chart | Parker O-Rings are available in various series, including the 2-XXX and 5-XXX series. These o-rings come in a range of sizes with specific dimensions… | – Wide range of sizes available to fit various applications – Precise dimensions and tolerances for reliable sealing – Manufactured from different com… | – Non-standard sizes may have limited availability and higher costs – Materials with non-standard shrinkage may affect dimensions and tolerances – Req… | www.espint.com |
| Custom O-Rings, Custom Molded O-Ring China Manufacturer | Savvy Rubber offers custom o-rings designed and produced to meet specific requirements. These o-rings can be customized in terms of cross-section and… | – Customizable to specific sizes and shapes – Strong cost control management resulting in low prices while maintaining high qu… – Wide range of mate… | – Higher price compared to standard o-rings due to the custom nature – Requires detailed communication and cooperation for non-standard shapes – May h… | savvyrubber.com |
| O-ring size (no tooling charge) | Precision Polymer Engineering (PPE) offers a wide range of O-ring sizes and types, including AS 568, DIN 11864, and RJT O-rings. These O-rings are ava… | – Fully molded O-rings eliminate joint weaknesses, reducing the risk of premature… – Tighter cross-section tolerances ensure a proper fit in critica… | – Jointed O-rings, though available, may have inherent weak spots at the joints. – Spliced O-rings can have mismatched joints and wider tolerances on… | www.prepol.com |
| Ring Size Guide | The ring size guide provides methods to determine your ring size accurately. You can measure an existing ring by taking the internal diameter in milli… | – Accurate measurements can be obtained using multiple methods (existing ring or f… – Guides often include charts for international size conversions… | – Finger size can fluctuate due to temperature and other factors, which may affect… – Some metals (like titanium and tungsten) and certain ring styl… | orochinajewelry.com |
| O-Rings, Rubber Seals – Best China Manufacturer & Supplier | Savvy manufactures a wide range of o-rings made from various materials including rubber, metal, and other materials. The most commonly used materials… | – High-temperature and FDA food grade compliance for certain materials – Wide range of materials available (NBR, FKM/Viton, Silicone, etc.) – Good wea… | – Low hardness o-rings can be prone to peeling, installation damage, extrusion, an… – High hardness o-rings can be inconvenient to install – Unique… | savvyrubber.com |
| China O-Ring Kits Suppliers – NNK Oil Seal | The Universal Type O-Ring Kit Box 30 size is a professional-quality assortment of O-rings. It includes 382 pieces of O-rings in 30 of the most popular… | – High-quality materials (NBR and FKM) providing excellent oil and chemical resist… – Wide range of sizes (30 sizes) to fit various applications – S… | – Limited to specific materials (NBR and FKM), which may not be suitable for all a… – No mention of availability for custom sizes or special orders… | www.nokcn-seals.com |
| China O-ring GB Standards English PDF List | The website provides a list of China national standards for O-rings, denoted by the prefix codes GB and GB/T. GB standards are mandatory, while GB/T s… | – Provides a comprehensive list of national standards for O-rings in China. – Distinguishes between mandatory (GB) and recommended (GB/T) standards. -… | – Does not offer detailed product specifications or applications for individual O-… – Standards are listed in a general format without specific prod… | www.gbstandards.org |
Frequently Asked Questions (FAQs)
Frequently Asked Questions About O-Ring Dimensions in Chinese Factories
What are the standard sizes for o-rings available in Chinese factories?
Chinese factories offer a wide range of standard o-ring sizes, including those conforming to international standards such as AS568, BS1516, DIN 3771, ISO 3601, and GB 3452.1. These sizes are typically specified by the inside diameter (ID) and the cross-section (CS) or thickness. For example, common cross-sections include 1.78mm, 2.62mm, 3.53mm, and more. You can also request custom sizes if the standard ones do not meet your needs.
How do I specify the dimensions of an o-ring for my order?
To specify the dimensions of an o-ring, you generally need to provide the inside diameter (ID) and the cross-section (CS) or thickness. For instance, a standard o-ring size might be given as ID 20 x CS 2 mm. The outside diameter (OD) can be calculated using the formula: OD = ID + CS * 2. This ensures that the o-ring fits perfectly in your application.
What materials are commonly used for o-rings in Chinese factories?
Chinese factories produce o-rings from a variety of materials, each with its own unique properties. Common materials include NBR (Nitrile), FKM (Viton), EPDM, Silicone, HNBR, and FFKM. Each material has different compatibility with chemicals, temperature resistance, and other characteristics, so you can choose the one that best suits your application.
Can I get custom o-rings with non-standard dimensions or shapes?
Yes, you can get custom o-rings with non-standard dimensions or shapes. If the cross-section or outline shape is not standard, it is considered a custom o-ring. For these, you typically need to provide a drawing or specifications, and the factory will create a mold for production. Custom o-rings are more expensive and may have longer lead times but can be tailored to your specific needs.
What is the typical delivery time for o-ring orders from Chinese factories?
The delivery time for o-ring orders can vary depending on the factory and the complexity of the order. For standard sizes, delivery times are usually faster, often within 7-15 days. For custom orders, it may take longer due to the need to create a mold. Delivery can be arranged by express, air, or sea, and some factories offer door-to-door courier services to expedite the process.