Are you looking for the best O-ring manufacturers in China to meet your specific needs? With numerous factories offering a wide range of O-ring sizes and materials, choosing the right one can be overwhelming. In this article, we’ll compare the top O-ring standard sizes factories in China, helping you make an informed decision for your next project. Let’s dive in and find the perfect fit for you.

O-ring size (no tooling charge)

Rubber o-ring sizes

Product Details: Rubber O-ring sizes at Precise Rubber range from an internal diameter (ID) of 0.5 mm to 2000.00 mm and a cross-section (CS) diameter of 0.3 mm to 15.00 mm. The company follows the American standard AS568 series for their standard O-ring sizes.

Pros:
– Wide range of sizes available, accommodating various applications.
– Compliance with American standard AS568 series ensures consistency and reliabili…

Cons:
– No specific details on material options or special sizes beyond standard AS568 s…
– No information on pricing or availability is included.

French R O-Rings, AS 568A O-Rings, JIS …

Product Details: French R O-Rings are measured by their inside diameter (ID) and cross-section width (C.S.) dimensions, given in millimeters. The series includes a wide range of sizes, from O-Ring R000 with an ID of 1.15 mm and C.S. of 0.13 mm to O-Ring R75 with larger dimensions. These O-Rings are standardized and used in various applications where compact design and good sealing are required. The dimensions and sizes are precisely listed, ensuring compatibility with different housing requirements.

Pros:
– Wide range of sizes available to fit various applications
– Precise measurements in millimeters for accurate fitting
– Standardized dimensions for easy selection and use
– Compact design suitable for diverse industrial applications

Cons:
– Limited information on specific material properties and chemical compatibility o…
– No details on the maintenance or adjustment requirements
– No information on the maximum pressure and speed limits for each size

Parker AS568 O-Rings Size Chart

Product Details: Parker O-rings are circular sealing elements available in various materials such as Fluorocarbon (FKM), Nitrile Rubber (NBR), Ethylene Propylene Rubber (EPDM), Silicone (VMQ), and others. They are manufactured to exacting standards, ensuring material consistency and dimensional control. Parker O-rings are formulated to meet stringent industry standards, including NSF, UL, Military (MIL-SPEC), Aerospace (AMS), and FDA. They are used in a wide range of applications, including automotive, fluid power, semiconductor processing, and general industrial uses.

Pros:
– High chemical and thermal resistance depending on the material chosen.
– Ease of service, no smearing or retightening required.
– No critical torque on tightening, reducing the risk of structural damage.
– Compact and lightweight, requiring minimal space.
– Cost-effective and reusable in many cases.
– Gradual failure mode, easily identifiable.
– Wide range of materials available to meet specific application needs.

Cons:
– Material selection is critical to ensure the O-ring meets the application’s dema…
– Some materials, like Butyl rubber, have poor short-term rebound properties.
– Certain materials may have limitations in low-temperature flexibility or water c…
– May require specific installation methods to ensure optimal performance.

Custom O-Rings, Custom Molded O-Ring China Manufacturer

Product Details: Savvy Rubber offers custom o-rings designed and produced in various cross-sections and shapes. These o-rings are defined as custom if their cross-section is outside the range of standard o-rings or if they have non-round outline shapes such as square, rectangular, or other irregular shapes. To produce custom o-rings, the inner diameter (ID) and cross-section (CS) are required, or a detailed drawing if the shape is irregular. Custom o-rings are used in industries like hydraulics, oil and gas, semiconductor processing, aerospace, food processing, water filtration, electronic products, machinery fabrications, plastic sealing, automotive, and medical equipment. The materials used include NBR, FKM,

Silicone, and others, with various hardness levels measured in Shore A units.

Pros:
– Custom o-rings can be tailored to specific application requirements, ensuring a…
– Savvy Rubber has strong cost control management, offering competitive prices whi…
– The company can design and produce custom o-rings with low mold/tooling costs an…
– Custom o-rings are available in various materials and colors to meet different i…

Cons:
– Custom o-rings are used in lower volumes than standard o-rings, resulting in hig…
– The production process requires detailed communication and cooperation, especial…
– Unique or non-standard colors may increase the cost and require a larger minimum…

Ring Size Conversion Chart – International – Après Jewelry

Product Details: The International Ring Size Conversion Chart on Apres Jewelry’s website provides a comprehensive guide to convert ring sizes across different international standards. It includes measurements in millimeters and inches, and corresponds to ring sizes in the USA/Canada/Mexico, UK/Ireland/Australia/New Zealand/South Africa, Germany/France, and other regions. The chart lists various ring sizes with their respective inside diameters, allowing users to accurately determine their ring size in different countries.

Pros:
– Comprehensive conversion chart covering multiple international ring size standar…
– Includes measurements in both millimeters and inches for accuracy.
– Helpful for online shoppers to ensure the correct ring size is purchased.

Cons:
– The chart does not provide any additional fitting advice or tips beyond the size…
– Users need to refer to other resources for guidance on how to measure their ring…

China O-Ring Kits Suppliers – NNK Oil Seal

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. O-rings are available in various hardness levels, typically measured in Shore A units, ranging from 40 to 90, with 60-70 being the most

common. They can be produced in different colors and are compliant with various standards such as RoHS and REACH.

Pros:
– Good property and low cost of NBR
– Best comprehensive performance of FKM/Viton
– FDA compliance, tastelessness, and non-toxicity of Silicone
– High temperature and severe cold resistance of Silicone
– Wide range of hardness levels and colors available
– Compliance with RoHS and REACH standards
– Custom o-rings available at low mold/tooling cost and fast delivery

Cons:
– Low hardness o-rings are prone to peeling, installation damage, extrusion, and p…
– High hardness o-rings can be inconvenient to install
– Unique colors may increase cost and require larger MOQ with longer delivery time

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 specified by their inside diameter and come in various materials such as Nitrile (NBR), Fluorocarbon (FKM, FPM), Ethylene Propylene (EPDM), Hydrogenated Nitrile (HNBR), Silicone (VMQ), and others. Each material has specific applications: NBR O-rings are compatible with oils and gases; FKM O-rings are suitable for explosive decompression, oil & gas, and dynamic applications; EPDM O-rings are focused on food & beverage, chemical processing, and pharmaceutical applications; HNBR O-rings offer good mechanical robustness for automotive and heavy-duty applications; and Silicone O-rings are compatible with PFPE,

cold water, and ozone[5].

Pros:
– Wide range of materials available to suit different applications and environment…
– High compatibility with various fluids such as oils, gases, hydraulic oils, and…
– Good mechanical robustness and resistance to wear and extrusion in high-pressure…
– Ease of service with no smearing or retightening required.
– Cost-effective and lightweight with minimal space requirements.
– Gradual failure mode that is easily identifiable.

Cons:
– Specific materials have limitations in compatibility with certain chemicals and…
– Some materials may have poor short-term rebound or cold flexibility (e.g., Butyl…
– Certain materials are not resistant to strong acids, chlorinated hydrocarbons, o…

Metric o store ring chart – Kin by Rice n Roll

Product Details: Kin by Rice n Roll is a family-run restaurant and potentially a jewelry store. The restaurant is known for its homemade, fresh, and tasty Asian food, especially from Thailand and Japan. The jewelry aspect includes custom bracelets with pictures and personalized photo bracelets.

Pros:
– Family-run restaurant with a passion for homemade cooking
– Fresh and tasty Asian food with modernized presentation
– Customizable jewelry options such as photo bracelets

Cons:
– Limited information available on specific products or services
– No clear distinction between restaurant and jewelry store offerings on the provi…

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About O-Ring Standard Sizes Factories in China

What are the common materials used for O-rings in Chinese factories?

Chinese factories use a variety of materials for O-rings, including NBR (Nitrile), FKM (Viton), EPDM, HNBR (Highly Saturated Nitrile), FFKM, and Silicone. Each material has its own set of properties, such as temperature resistance, chemical resistance, and wear resistance, making them suitable for different applications.

What are the standard sizes available for O-rings in China?

O-ring factories in China offer standard sizes based on various international standards, including AS568 (USA), JIS (Japan), DIN 3771 (Germany), BS 1516 (UK), and ISO 3601 (International). These standards cover a wide range of inner diameters and cross-sections to fit various industrial needs.

Can I customize the size and material of O-rings from Chinese manufacturers?

Yes, you can customize the size and material of O-rings from Chinese manufacturers. Many factories offer OEM and ODM services, allowing you to specify the exact dimensions, material, and performance requirements for your O-rings. They can produce both standard and non-standard sizes according to your needs.

What is the minimum order quantity (MOQ) for O-rings from Chinese factories?

The minimum order quantity (MOQ) for O-rings from Chinese factories can vary but typically ranges from 100 to 1000 pieces, depending on the manufacturer and the specific product. Some factories may accommodate lower MOQs, especially for custom orders.

Do Chinese O-ring manufacturers provide certifications and quality assurance?

Yes, many Chinese O-ring manufacturers are certified under international standards such as ISO 9001, ISO 14001, and IATF 16949. These certifications ensure that the products meet high-quality and environmental standards. Additionally, some manufacturers offer free samples for testing and have their products audited by independent third-party inspection agencies.