Are you looking for the best o-ring manufacturers in China to meet your specific needs? With so many options available, choosing the right one can be overwhelming. In this article, we’ll compare the top o-ring metric factories in China, highlighting their unique strengths, product ranges, and what sets them apart. Let’s dive in and find the perfect fit for your requirements.

China O-Ring Kits Suppliers – NNK Oil Seal

Product Details: O-ring kit boxes are comprehensive sets containing various sizes of O-rings, typically made from materials such as NBR (Nitrile), FKM (Viton), EPDM, and Silicone. These kits are designed to provide a wide range of O-ring sizes, often organized in hard-wearing storage boxes. They are used in numerous industrial applications, including connectors, cylinders, pumps, and valves, to seal joints and prevent the leakage of liquids and gases. The kits usually include 30 to 40 different sizes, with total piece counts ranging from 382 to 400 or more, depending on the manufacturer and specific kit type.

Pros:
– Provides a wide range of O-ring sizes for various applications
– Made from high-quality materials ensuring superior sealing performance
– Customization options available to meet specific requirements
– Enhances system efficiency by preventing leaks and reducing friction
– Suitable for high-pressure environments and diverse industrial uses

Cons:
– May not be suitable for safety-critical applications without premium quality ass…
– Can be more expensive compared to purchasing individual O-rings
– Storage and organization of the O-rings can be cumbersome if not properly manage…

FKM O Rings, China NBR O Ring supplier

Product Details: The products offered by www.o-ringsseals.com include a wide range of O-ring seals made from various materials such as NBR, FKM, EPDM, HNBR, ACM, NR, and more. These O-rings are available in customized sizes, including standard AS568 and ISO 3601 sizes, as well as non-standard sizes. The hardness range is from 20 Shore A to 90 Shore A. The products are certified with ISO9001, TS16949, CE, SGS, RoHS, and REACH. They are used in various applications including automotive, construction machinery, machine tool equipment, food, health, water treatment, and chemical processing. The company, Rui Chen Sealing Co., Ltd., has two factories located

in Guangdong and Jiangxi provinces in China and offers OEM production based on customer drawings or samples[1][3][4].

Pros:
– All manufacturing processes conform to ISO-9001 standards, ensuring high quality…
– Excellent shock-proof, heat insulation, and sound insulation performance.
– Customizable specifications, packing requirements, and colors according to custo…
– High flexibility and anti-compressive deformation, along with excellent chemical…
– Long lifetime of components, with certifications from well-known manufacturers.
– Experienced staff available to answer inquiries in fluent English.
– Fast response time, with inquiries replied within 24 hours.
– Wide range of materials available, including NBR, FKM, EPDM, HNBR, and more.
– High temperature resistance and low temperature resistance capabilities.
– Immediate delivery available from a large inventory of over 300 million O-rings[…

Cons:
– Minimum Order Quantity (MOQ) requirements, which can be a barrier for small orde…
– Payment terms require 100% payment in advance for orders under $1000 (or $2000 i…

China O Rings Manufacturers and Suppliers

O-Rings, Rubber Seals – Best China Manufacturer & …

Product Details: Savvy manufactures a wide range of o-rings, including traditional standard o-rings, encapsulated o-rings, backup-rings, and x-rings. These o-rings can be made from various materials such as NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, and Aflas. The temperature range for these o-rings varies by material, 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 custom colors can be produced with a provided RAL or Pantone color number.

Pros:
– Good property and low cost, especially for NBR o-rings which make up about 50% o…
– FKM (Viton) o-rings offer the best comprehensive performance and are widely used…
– Silicone o-rings are tasteless, non-toxic, and resistant to high temperatures an…
– Easy to install, with the option for custom molds and fast delivery.
– High precision and smooth appearance, particularly for rubber o-rings.

Cons:
– Low hardness o-rings are prone to peeling, installation damage, extrusion, and p…
– High hardness o-rings can be inconvenient to install.
– Custom colors may increase the cost and require a larger minimum order quantity…

Metric O-Rings

Product Details: Metric O-rings are mechanical seals with standardized dimensions based on the International Organization for Standardization (ISO 3601). They are defined by their inside diameter (ID) and cross-section (CS), and are used in various applications such as valves, engine components, hydraulics, and pipe joints. These O-rings are made from different materials like Buna-N Nitrile (NBR), Viton (FKM), EPDM, and others, each chosen for their specific properties like chemical compatibility, temperature range, and sealing pressure.

Pros:
– Inexpensive and reliable
– Suitable for higher pressure and hydraulic applications
– Available in various materials to meet different sealing requirements
– Standardized dimensions ensure global compatibility
– Can be customized for specific durometer, material, and color needs

Cons:
– Material limitations based on temperature and chemical compatibility
– Requires precise groove dimensions for optimal performance
– Not all material and durometer combinations are available

O ring store catalogue metric – Kin by Rice n Roll

Product Details: KIN by Rice n Roll is a family-run restaurant offering a variety of Asian food and sushi. The menu includes items like the Garden Twist Maki, which features cream cheese, sweet potato tempura, asparagus, tempura topped avocado, spicy mayo, and sriracha.

Pros:
– Family-run restaurant with a passion for homemade, fresh, and tasty food
– Variety of Asian food and sushi with modernized looks and authentic tastes
– Specific dishes like Garden Twist Maki offer a unique blend of flavors and ingre…

Cons:
– The website kinbyricenroll.com has been flagged as suspicious by some reviewers,…
– Limited detailed product information available on the website

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

Product Details: Hongju produces high-quality silicone rubber O-rings and high-temperature O-ring seals. These O-rings are used in various applications such as engines, pumps, cylinders, connectors, and valves. The company offers both standard and custom-made O-rings to meet specific customer needs. The manufacturing process includes design, tool making, color mixing, compression molding, and quality inspection. The products comply with ISO 3601 standards and can be made from various materials including silicone, EPDM, fluoro rubber, Viton, and more. The company also provides options for liquid silicone rubber and ensures the products meet international safety standards like CE, SGS, REACH, and ROHS Directive requirements[1][3][4].

Pros:
– High-quality silicone rubber O-rings with strong resistance to water, oil, and h…
– Customization capabilities to meet specific customer requirements.
– Strict quality control and compliance with international safety standards.
– Wide range of materials available, including silicone, EPDM, fluoro rubber, and…
– Advanced equipment and experienced staff ensure reliable quality and timely deli…
– Low minimum order quantity (MOQ) and rapid prototyping options available.

Cons:
– Importing from China may involve longer shipping times.
– Factory inspections may be limited due to epidemic restrictions, though online i…

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 excellent for oil & gas, dynamic, and general industrial applications due to their compatibility with oils, gases, hydraulic oil, and fuels. EPDM O-rings are focused on food & beverage, chemical processing, pharmaceutical, and general industrial applications. HNBR O-rings offer good mechanical robustness for

automotive, heavy duty, transportation, and general industrial uses.

Pros:
– Seal over a wide range of pressure, temperature, and tolerance.
– Ease of service with no smearing or retightening required.
– No critical torque on tightening, reducing the risk of structural damage.
– Require very little room and are light in weight.
– Can be reused in many cases, an advantage over non-elastic flat seals and crush-…
– Cost-effective.
– Gradual and easily identifiable failure mode.
– Compatible with a variety of fluids and environments depending on the material c…

Cons:
– Each material has specific compatibility limitations. For example, NBR is not co…
– FKM O-rings are not compatible with aromatic fuels, ketones, and chlorinated hyd…
– EPDM O-rings are not compatible with mineral oil and grease, fuels, and chlorina…
– HNBR O-rings may have limited resistance to certain chemicals like strong acids…
– Silicone O-rings have limited resistance to oils and fuels.

hydraulic 1el metric male o-ring/metric male with bonded …

Perfluoroelastomer FFKM O ring Manufacturer

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About O-Ring Metric Factories in China

What materials are commonly used by o-ring factories in China?

O-ring factories in China use a variety of materials, including Nitrile (NBR), Hydrogenated Nitrile (HNBR), Ethylene Propylene Diene Monomer (EPDM), Fluorinated Rubber (FKM), Silicone, and more. Each material has its own unique properties and is suited for different applications, such as high-temperature resistance, chemical compatibility, or oil resistance.

How do I specify the size of an o-ring for my order?

To specify the size of an o-ring, you typically need to provide the inside diameter (ID) and the cross-section (CS) or width. For example, an 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 you get the exact size you need for your application.

Can Chinese o-ring factories produce custom o-rings?

Yes, many Chinese o-ring factories offer customization services. They can produce o-rings according to your specific drawings or samples. This includes custom sizes, shapes, and materials. Some factories even offer low mold/tooling costs and fast delivery times, making it convenient to get the exact o-rings you need.

What is the typical hardness range for o-rings, and why is it important?

The hardness of o-rings is usually measured in Shore A units and ranges from 40 to 90. The most commonly used hardness is around 70 Shore A, although silicone o-rings often use 60 Shore A. The hardness is crucial because it affects the ease of installation and the o-ring’s performance. Lower hardness makes installation easier but may lead to issues like peeling or extrusion, while higher hardness can make installation harder but provides better durability.

Do Chinese o-ring factories provide certifications and comply with international standards?

Yes, many Chinese o-ring factories comply with international standards and hold various certifications such as ISO 9001, ISO 14001, IATF16949, and ISO 13485. They also adhere to standards like AS568 for the USA, BS1516 for the UK, DIN 3771 for Germany, JIS B 2401 for Japan, and ISO 3601 for international use. This ensures the quality and reliability of the o-rings produced.