Are you looking to partner with the best manufacturing facilities in China? Whether you’re in the market for high-quality PCBs or reliable hand tools, China is a hub of industrial excellence. In this article, we’ll compare the top PCB manufacturers and hand tool producers in China, helping you make informed decisions for your business needs. Let’s dive into the key players and what they have to offer.

Orings and More | Metric Orings and Hydraulic Seals

Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司

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 and custom-made O-rings to meet specific customer needs. The manufacturing process includes design, tool making, color mixing, compression molding, quality inspection, and packaging. Hongju adheres to ISO 3601 standards for dimensions and tolerances and can use different materials like liquid silicone rubber. The company is ISO 9001: 2008 certified and complies with international safety standards such as CE, SGS, REACH, and ROHS Directive requirements.

Pros:
– High-quality silicone rubber O-rings and high-temperature O-ring seals
– Custom-made O-rings available to meet specific customer needs
– Strict quality control and adherence to ISO 3601 standards
– Use of advanced equipment and materials
– Compliance with international safety standards like CE, SGS, REACH, and ROHS
– Low minimum order quantity (MOQ) and rapid prototyping capabilities
– Experienced staff and over 20 years of design and production experience

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

Wholesale O-Rings & O-Ring Boxes Manufacturer and …

Product Details: KDIK offers a wide range of oil seals and O-rings, including auto oil seals, agricultural machine oil seals, construction machinery oil seals, truck wheel hub oil seals, and more. The O-rings are made from various materials such as silicone, viton, EPDM, and Buna to cater to different industrial applications. These seals are designed for high performance, extended equipment life, and enhanced productivity. They are applicable to various models including Mitsubishi, Isuzu, Toyota, Nissan, Honda, Volvo, and others. The company also provides OEM and ODM services and has advanced production equipment and over 18 years of experience in the industry.

Pros:
– High-quality materials such as NBR, HNBR, EPDM, and FKM
– Advanced production equipment and over 18 years of experience
– Wide range of applications across automotive, agricultural, and construction ind…
– OEM and ODM services available
– Meets or exceeds major industry competitors’ performance
– Simplified installation with specialized tools
– Global market coverage with exports to over 100 countries
– ISO 9001:2008 & TS 16949 certified

Cons:
– Seals can fail due to severe cold or extreme temperatures
– Dirt and contaminants can cause seals to break down over time
– Installation requires careful handling to avoid damage

China O Rings Manufacturers and Suppliers

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

Custom FEP O-ring Manufacturer in China

Product Details: YOSON FEP O-rings are produced from fluorocarbon or silicone with seamless FEP jackets. They are certified to ISO 3601, BS 4528, and AS 568 standards and are available in both inch and metric sizes. These O-rings are designed to solve sealing problems due to their low friction, chemical resistance, and elastic properties. They offer excellent temperature resistance from -60°C to +260°C and are manufactured from FDA, USP Class VI compliant materials, and Sanitary 3A standards.

Pros:
– High corrosion resistance
– Excellent temperature resistance from -60°C to +260°C
– Low friction and chemical resistance
– Elastic properties for effective sealing
– Available in various colors and custom designs
– FDA, USP Class VI compliant and Sanitary 3A certified
– Used in diverse industries such as automotive, industrial, medical, agriculture,…
– Superior performance in sealing applications including paper and pulp, food and…

Cons:
– The FEP jacket’s slight stiffness can require custom gland design to maximize se…
– May require specific installation and application design to avoid over-compressi…

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 hundreds of O-rings organized in a hard-wearing storage box. The kits are available in different configurations, such as metric, inch, and Japanese sizes, and can be customized to meet specific needs. They are widely used in industries like engineering, manufacturing, and for equipment such as excavators, pumps, and

valves[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 needs
– Enhances system efficiency by preventing leaks and reducing friction
– Suitable for many industrial applications due to good lifetime and price-perform…

Cons:
– May not be suitable for safety-critical applications like automotive
– Quality and price can vary between manufacturers
– Storage and organization of the O-rings can be cumbersome if not properly manage…

China Supplier, Wholesale – FKM O Rings

Product Details: FKM O-rings are made from fluorocarbon rubber, a high-performance fluoroelastomer known for its excellent resistance to extreme temperatures, chemicals, and environmental conditions. They are commonly used in industries such as aerospace, automotive, and chemical processing. The standard temperature range for FKM O-rings is from -15°F to 400°F, although special formulations can extend this range. The hardness of FKM O-rings typically ranges from 55 Shore A to 95 Shore A, with 75 Shore A being the most common. They are available in various colors, including black, brown, and others, to meet specific application needs.

Pros:
– Excellent resistance to high temperatures up to 400°F (204°C) and low temperatur…
– Superior resistance to oils, fuels, lubricants, solvents, ozone, UV light, and w…
– High durability and long-lasting performance in harsh environments.
– Versatile and suitable for both static and dynamic applications.
– Wide range of hardness levels (55-95 Shore A) to meet specific sealing requireme…
– Compatibility with a broad range of chemicals and fluids, including petroleum oi…

Cons:
– Incompatible with certain substances such as amines, glycol-based brake fluids,…
– May require special formulations for extreme temperature conditions beyond the s…
– More expensive than some other types of O-ring materials, especially perfluorina…
– Requires proper material selection and compatibility testing to avoid premature…

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About O-Rings

What is an O-ring and what is its primary function

An O-ring is a circular mechanical gasket that acts as a seal between two components. Its primary function is to prevent fluid or air from escaping or entering the joint, ensuring a leak-free seal. When compressed between two surfaces, the O-ring takes up any clearance and expands to fill the gap, creating a reliable seal.

What materials are O-rings made of

O-rings are made from a variety of materials, each suited for different applications. Common materials include nitrile, silicone, neoprene, fluorocarbon (Viton), and polyurethane. The choice of material depends on the exposure to chemicals, heat, and other environmental conditions.

Where are O-rings commonly used

O-rings are highly versatile and are used in numerous industries, including automotive, aerospace, hydraulics, pneumatics, medical devices, and electronics. They are essential in applications such as hydraulic cylinders, engines, medical equipment, and electronic components to prevent leaks and contamination.

What are the advantages of using O-rings

O-rings offer several advantages, including their ability to create a reliable and leak-free seal, ease of use, and cost-effectiveness. They are lightweight, compact, and require no specialist installation tools. O-rings are also highly resistant to heat and chemicals, making them suitable for a wide range of applications.

How do I choose the right O-ring for my application

To choose the right O-ring, you need to consider several factors, including the pressure limits, operating temperatures, exposure to chemicals, and the type of motion involved (static or dynamic). You should also evaluate the material’s hardness and ensure it complies with industry standards such as food safety or medical-grade requirements. Consulting a chemical resistance list and seeking advice from specialists can also be helpful.