Are you looking for the best metric O-ring factories in China? If so, you’re in the right place. In this article, we’ll compare some of the top Chinese manufacturers known for their high-quality O-rings, highlighting their strengths, product varieties, and what sets them apart in the industry. Let’s dive in and find the perfect fit for your needs.

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. The 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 the o-rings is measured in Shore A, typically ranging from 40 to 90, with Shore A 70 being commonly used. Savvy also offers custom o-ring production with low mold/tooling costs and fast delivery. The o-rings are available in various colors, with standard colors including Black

for NBR, Green for HNBR, and Brown for Viton.

Pros:
– High-temperature resistance, especially for Silicone o-rings which can handle te…
– Good chemical resistance; different materials offer compatibility with various c…
– Wide range of materials available, including FDA-grade Silicone for medical and…
– Low mold/tooling costs for custom o-ring production.
– Fast delivery options through door-to-door courier services.
– High precision and smooth appearance, particularly for encapsulated and special…

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

Metric O-Rings

Product Details: Metric O-rings are defined by the International Standard ISO 3601-1:2002 and are measured in millimeters. They are specified by their inside diameter (ID) and cross-section (CS). For example, a metric O-ring part number might be ‘N2.00X012’, indicating a 2mm cross-section and a 12mm inside diameter. These O-rings are made from various materials such as Buna-N Nitrile (NBR), Viton (FKM), EPDM, and others, each chosen for specific properties like chemical compatibility, temperature range, and sealing pressure. They are used in applications including valves, engine components, hydraulics, and more.

Pros:
– Inexpensive and reliable
– Suitable for higher pressure and hydraulic applications
– Available in various materials to meet different sealing requirements
– Standardized dimensions ensure international compatibility
– Good mechanical properties and resistance to lubricants and greases

Cons:
– Material limitations based on temperature and chemical compatibility
– Requires precise groove dimensions for optimal performance
– Not all material and durometer combinations are available
– Color options may be limited for certain materials and durometers

FKM O Rings, China NBR O Ring supplier

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 sizes 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.

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.

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

China O Rings Manufacturers and Suppliers

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), Silicone, FKM, EPDM, and HNBR. These kits are designed to provide a wide range of O-ring sizes for different applications, including sealing liquid and gaseous media in high-pressure environments. Each kit usually includes multiple sizes of O-rings, often organized and stored in a durable box. For example, kits like the 5A, 5B, and 5C from Kesaria Rubber Industries contain 382 pieces in 30 assorted sizes, available in NBR and Silicone materials[1][2][4].

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
– Durable storage boxes to keep O-rings organized and protected
– Suitable for many industrial applications, including high-pressure environments

Cons:
– May not be suitable for safety-critical applications like automotive without pre…
– Lead times for custom orders can range from 10 to 30 days
– Prices may not be the lowest compared to other similar quality products

O ring store catalogue metric – Kin by Rice n Roll

Product Details: 8mm cultured store pearl stud earrings. These earrings are part of the accessories section, though the primary focus of the website is on the restaurant KIN by Rice n Roll.

Pros:
– Cultured pearls are generally considered high-quality and durable.
– The earrings are available in a specific size (8mm).

Cons:
– Limited information is available about the earrings on the website.
– The website’s primary focus is on the restaurant, not the accessories.

Xiamen Seals Technology Co.,Ltd: China O-Rings, X- …

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

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 or outline shape deviates from standard o-ring sizes. For custom o-rings, only the inner diameter (ID) and cross-section (CS) are needed for production, or a drawing if the shape is irregular. Savvy manufactures o-rings in different materials such as NBR, FKM, and Silicone, each with specific properties and applications. The o-rings are used in industries like hydraulics, oil and gas, semiconductor processing, aerospace, food processing, and more. The hardness of the o-rings ranges from Shore A 40 to

90, and they can be produced in various colors based on RAL or Pantone color numbers.

Pros:
– Strong cost control management, offering low prices while maintaining high quali…
– Ability to produce o-rings in various sizes, materials, and colors to meet speci…
– Experienced OEM manufacturer with a wide range of industry applications.
– Fast delivery and low mold/tooling costs.
– Customization options including irregular shapes and special features like barco…

Cons:
– Higher price compared to standard o-rings due to the unconventional nature and l…
– Potential need for extensive communication and cooperation if a customer cannot…
– Unique colors may increase cost and require a larger minimum order quantity (MOQ…

Perfluoroelastomer FFKM O ring Manufacturer

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About Metric O-Ring Factories in China

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

Metric o-ring factories in China use a variety of materials, including Nitrile (NBR), Ethylene Propylene Diene Monomer (EPDM), Fluorinated Rubber (FKM), Hydrogenated Nitrile Butadiene Rubber (HNBR), and Silicone. Each material has its own unique properties and is suited for different applications and environments.

How do I specify the size of a metric o-ring?

To specify the size of a metric 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.

Can I get custom o-rings from Chinese manufacturers?

Yes, many Chinese o-ring manufacturers offer customization services. They can produce o-rings according to your specific drawings or samples. This includes custom sizes, materials, and even colors. Companies like Savvy, Hongju, and SWKS Seal provide OEM and ODM services to meet your unique needs.

What are the standard hardness levels for o-rings, and how do I choose the right one?

O-ring hardness is measured in Shore A units, typically ranging from 40 to 90. For most applications, a hardness of 60-70 Shore A is suitable, but for higher sealing pressures, you may need o-rings with a hardness of 85-90 Shore A. The choice of hardness depends on the balance between ease of installation and the need for durability and resistance to damage.

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

Yes, many Chinese o-ring manufacturers are certified to international standards such as ISO 9001, ISO 14001, and IATF 16949. They also comply with various national standards like AS568 for the USA, BS1516 for the UK, and ISO 3601 for international use. This ensures that the o-rings meet high quality and performance standards.