Are you curious about where the best origami papers come from? Let’s take a journey to China, home to some of the world’s top origami manufacturers. From Guangdong to Fujian, we’ll explore the factories that produce the highest quality origami papers, making your paper folding adventures even more enjoyable.

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

Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司

FKM O Rings, China NBR O Ring supplier

China O Rings Manufacturers and Suppliers

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

Perfluoroelastomer FFKM O ring Manufacturer

Product Details: FFKM O-rings are made of perfluoroelastomer compounds with a higher fluorine content than FKM fluoroelastomers. They are known for their excellent resistance to chemical corrosion, including organic and inorganic acids, alkali, ester, ether, ketone, aldehyde, superheated water, and steam. The maximum operating temperature is 230 °C (446 °F). These O-rings can be manufactured into various forms such as O-rings, diaphragms, gaskets, rubber strips, and rubber plates. They are ideal for harsh chemical environments and are used in industries like semiconductor, petrochemical, mechanical seal, instrumentation, energy, biopharmaceutical, food, and medical industries[1].

Pros:
– High temperature resistance up to 230 °C (446 °F)[1] – Excellent chemical resistance to a wide range of aggressive chemicals including…
– Long service life and reliability in demanding applications[2][3] – Ideal for use in critical applications where sealing failure is strictly prohibi…
– High thermal stability, oxidative stability, and chemical stability due to carbo…

Cons:
– Higher cost compared to standard FKM materials[4] – Poor low temperature performance, with limited flexibility at lower temperatures…
– May require specific testing and material compatibility checks due to the broad…

O Rings Manufacturer | O Rings Supplier – Hongjie Rubber Seal

Product Details: Hongjie Sealing Technology offers a wide range of O-ring products, including custom O-rings, rubber O-rings, and O-rings that meet various international standards. The company provides one-stop OEM/ODM solutions, allowing for customization in design, color, packaging, and logo. They utilize well-known raw material suppliers to ensure basic product quality and have a certificated laboratory to develop and identify compounds according to specific specifications or ASTM D200 callouts.

Pros:
– One-stop O rings OEM/ODM solution
– Custom options: design, color, packaging, logo
– Various international O-Ring standards, most sizes already tooling
– Suitable and well-known raw material suppliers
– Certificated compound to meet specific markets
– Certificated laboratory for compound development
– Affordable factory direct prices

Cons:
– No specific cons mentioned on the website

Custom HNBR O-Ring Manufacturer in China

Product Details: HNBR (Hydrogenated Nitrile Butadiene Rubber) O-Rings are made by hydrogenating the double bonds in nitrile’s butadiene segments, enhancing their heat, ozone, and chemical resistance. They are available in 70, 80, and 90 durometers and are suitable for use with petroleum-based oils and fuels, aliphatic hydrocarbons, vegetable oils, silicone oils and greases, ethylene glycol, water, and steam up to 300°F, as well as diluted acids, bases, and salt solutions. The ACN content varies from 17% to 49%, affecting low-temperature properties and resistance to fuels and polar lubricants. Standard HNBRs typically have 36% ACN content. They are usually peroxide-cured but can also

be sulfur-cured for improved flexibility in dynamic systems.

Pros:
– Superior heat, ozone, and chemical resistance compared to standard Nitrile
– Excellent resistance to petroleum-based oils and fuels, aliphatic hydrocarbons,…
– Good performance in water and steam up to 300°F
– Resistant to diluted acids, bases, and salt solutions
– Can be used in demanding applications such as automotive and industrial settings
– Better low-temperature properties with lower ACN content

Cons:
– Not suitable for use with chlorinated hydrocarbons, ketones, ethers, esters, and…
– Sulfur-curing reduces heat resistance and causes an inferior compression set
– Higher ACN content results in inferior low-temperature properties

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

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 and durab…
– Customization options available to meet specific sealing needs.
– Convenient storage and organization of O-rings.
– Suitable for many industrial applications, including static, dynamic, hydraulic,…

Cons:
– May not be suitable for safety-critical applications like automotive without pre…
– The cost can be higher compared to buying individual O-rings, although the kits…
– Storage and handling require care to maintain the integrity of the O-rings.

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About O-Ring Manufacturers in China

What materials are commonly used by O-ring manufacturers in China?

O-ring manufacturers in China use a variety of materials, including Nitrile Butadiene Rubber (NBR), Fluorokalon (FKM or Viton), Silicone, Ethylene Propylene Diene Monomer (EPDM), and Hydrogenated Nitrile Butadiene Rubber (HNBR). Each material has its own unique properties and is chosen based on the specific application and requirements, such as chemical resistance, temperature tolerance, and cost.

Can I customize O-rings according to my specifications?

Yes, you can customize O-rings to fit your specific needs. Many manufacturers in China offer OEM and ODM services, allowing you to design and produce O-rings in various sizes, shapes, and materials. They can also customize colors, packaging, and even add your logo. This flexibility ensures you get the exact product you need for your application.

What are the typical minimum order quantities (MOQs) for O-rings in China?

The minimum order quantities (MOQs) for O-rings in China can vary widely depending on the manufacturer. Some companies have low MOQs, such as 10 or 100 pieces, while others may require larger orders of 500 to 5,000 pieces. It’s always a good idea to check with the specific manufacturer to see what their MOQ is and if they can accommodate smaller orders.

Do Chinese O-ring manufacturers adhere to international standards?

Yes, many Chinese O-ring manufacturers adhere to international standards. They often comply with standards such as AS568 for the USA, BS1516 for the UK, DIN 3771 for Germany, JIS B 2401 for Japan, ISO 3601 for international use, and GB 3452.1 for China. Additionally, they may hold certifications like ISO 9001, ISO 14001, and IATF16949, ensuring the quality and reliability of their products.

How can I ensure the quality of O-rings from Chinese manufacturers?

To ensure the quality of O-rings from Chinese manufacturers, look for companies that are certified by reputable standards such as ISO 9001. Many manufacturers also offer free samples for testing and have advanced testing equipment to ensure their products meet international standards. Additionally, checking customer reviews and asking about their quality control processes can provide further assurance.