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

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 for various applications, including engines, pumps, cylinders, connectors, and valves. They offer both standard and custom-made O-rings, with the ability to meet specific requirements. The O-rings are designed to have strong resistance to water, oil, and high temperatures. The manufacturing process includes design, tool making, color mixing, compression molding, quality inspection, and packaging. Hongju follows ISO 3601 standards for dimensions and tolerances and can use different materials such as liquid silicone rubber as needed.

Pros:
– High-quality silicone rubber O-rings with strong resistance to water, oil, and h…
– Custom-made O-rings available to meet specific customer needs
– Strict quality control and adherence to ISO 3601 standards
– Wide range of materials available, including liquid silicone rubber
– Advanced equipment and experienced staff ensure reliable products
– Certified to ISO 9001: 2008 and comply with international safety standards like…

Cons:
– Importing from China may involve longer shipping times
– Production cycle can vary from 9-15 workdays depending on quantity and complexit…

Large silicone store o rings – Kin by Rice n Roll

Product Details: Kin by Rice n Roll is a family-run restaurant located in Wauwatosa, known for its Asian cuisine, particularly Thai and Japanese dishes. It is part of the Rice n Roll Bistro family and offers a modernized look and authentic taste.

Pros:
– Variety of Asian food and sushi
– Homemade, fresh, and tasty dishes
– Family-run and passionate about cooking
– Modernized look and authentic taste

Cons:
– Reservations can only be made 24 hours prior
– No reservations on Friday and Saturday
– Table will be released if more than 5 minutes late

China, O-Rings & McMaster

Product Details: The discussion revolves around O-rings sourced from various international locations, including China, Mexico, and potentially Taiwan. The user ordered O-rings from McMaster Carr, which were surprisingly cheap at $.044 each, indicating they were likely sourced from China. The user also contacted Parker and Apple Rubber to inquire about the origin of their O-rings, finding that many were not made in the US. The O-rings in question were for mechanical applications, and the user experienced quality issues, such as a small tear in one of the O-rings from McMaster Carr.

Pros:
– Inexpensive: The O-rings were very cheap, with prices as low as $.044 each.
– Wide availability: O-rings are widely available from various suppliers, includin…

Cons:
– Quality issues: The user encountered a small tear in one of the O-rings from McM…
– Uncertain origin: Many O-rings, even from reputable suppliers like Parker and Ap…
– Need for 100% inspection: The user recommends inspecting every O-ring before ins…

Greene Tweed Distributors

Product Details: Greene Tweed designs and manufactures thermoplastics, elastomers, composites, and engineered components for demanding applications. Their products include sealing solutions, connectors, and structural components that outperform and outlast the competition. These components are used in various industries such as aerospace & defense, oil & gas, life sciences, semiconductor, and more.

Pros:
– High-performance components built for harsh industrial conditions
– Custom-engineered solutions to meet specific industry needs
– Durable and reliable products that optimize performance
– Solutions for critical applications in multiple industries

Cons:
– May require specialized knowledge for installation and maintenance
– Could be more expensive due to high-quality materials and engineering
– Limited information available for specific product lines without direct access t…

Hnbr store o rings

Product Details: The Mariahilf Citycenter Hotel is a 3-star hotel located in the 15th district of Vienna, Rudolfsheim-Fünfhaus. It offers 23 rooms and is situated near Gumpendorfer Strasse underground station. The hotel is close to several attractions, including the Vienna State Opera (2.6 km), Belvedere Museum (3 km), and Schonbrunn Palace (2.1 km). It provides free Wi-Fi, a daily continental breakfast, and airport transfer services. The hotel features a garden area, lift access, and security. Each room includes a shower, complimentary toiletries, and an electric kettle. Check-in is from 15:00 to 23:59, and check-out is until 10:00.

Pros:
– Convenient location near public transportation and key attractions
– Free Wi-Fi and continental breakfast
– Airport transfer services available
– Garden area and lift access
– Clean and well-maintained rooms
– Helpful and polite staff
– Spacious and quiet rooms with nice bathrooms

Cons:
– Some guests reported dirty rooms and bathrooms
– Front office not available early in the morning

O-Rings | China – Products | Parker NA

Product Details: Parker O-rings are circular sealing elements with circular cross-sections, mainly used in static applications. They are specified by the 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 and compatibilities. For example, FKM O-rings are excellent for explosive decompression, oil & gas, and are compatible 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 use[5].

Pros:
– Wide range of materials available to suit different applications and environment…
– High compatibility with various fluids, gases, and chemicals.
– Ease of service and installation with no smearing or retightening required.
– Cost-effective and require minimal space and weight.
– Gradual failure mode that is easily identifiable.
– High temperature and chemical resistance depending on the material chosen.

Cons:
– Each material has specific limitations and incompatibilities with certain fluids…
– Some materials, like NBR, are not compatible with fuels of high aromatic content…
– EPDM O-rings have poor compatibility with brake fluids with glycol base and pola…
– FKM O-rings may not be compatible with aromatic fuels, ketones, or chlorinated h…
– Material selection is critical to ensure the O-ring meets the specific applicati…

O Ring assortment’s that don’t suck?

Product Details: O-ring assortments typically include a variety of o-rings in different sizes, materials, and shapes. These assortments can be found in standard and metric sizes, often including materials such as Nitrile (NBR), Viton (FKM), EPDM, and silicone. They are designed to cover a range of applications, including automotive, industrial, and DIY projects.

Pros:
– High versatility and customizability, available in various materials and sizes.
– Cost-effective, especially when purchased in bulk.
– Wide availability in standard and custom sizes.
– Suitable for both static and dynamic applications, though with some limitations…

Cons:
– May not be suitable for high-pressure applications without backup rings.
– Can be problematic in dynamic applications involving twisting or rolling motions…
– Material selection is critical and must match the application’s environmental an…
– Some users find the quality and precision of bulk o-ring sets to be variable.

O-ring size (no tooling charge)

Product Details: Precision Polymer Engineering (PPE) offers a wide range of O-ring sizes and types, including AS 568, DIN 11864, and RJT O-rings. These O-rings are available in various materials such as FFKM, FKM, EPDM, and Silicone, with certifications including FDA, USP, and 3-A 18-03. The O-rings are manufactured to precise tolerances, with options for fully molded large diameter O-rings up to 2.5 meters outer diameter and cross sections from 5mm to 20mm.

Pros:
– High precision and tight tolerances ensure proper fit and reliability in critica…
– Fully molded O-rings eliminate weak spots at joints, reducing the risk of premat…
– Available in high-performance elastomer grades with excellent chemical resistanc…
– Metal detectable elastomers are available for enhanced consumer safety in food a…
– Manufactured in cleanroom environments to minimize contamination.

Cons:
– Custom tooling may be required for non-standard sizes, which could add to the ov…
– Lead times, although short, may still be a consideration for very urgent require…
– The need for specific material types and certifications can limit flexibility in…

ORing

Facilities | Contact Us

Product Details: John Crane offers a wide range of products including mechanical seals, seal support systems, power transmission couplings, packing materials, gaskets, and other engineered sealing solutions. Their mechanical seals include small elastomer bellows seals, double mechanical seals, and large customized dry-running gas seals. They also provide seal support systems, power transmission couplings, and various types of packing materials such as compression packing, automatic packing, and injectable packing. Gaskets are made from materials like graphite, PTFE, EPDM, and neoprene, and are customized to meet specific customer needs.

Pros:
– Wide range of sealing solutions for various industrial applications
– High-quality products and exceptional customer service
– Global network of service centers and manufacturing facilities for fast and reli…
– Compliance with international standards such as API 682
– Advanced technologies to reduce maintenance costs, downtime, and environmental i…
– Customized solutions developed by experienced engineers to meet unique customer…
– Value-added services including performance optimization, training, and predictiv…

Cons:
– Highly specialized products may require specific expertise for installation and…
– Some products, especially customized ones, can be costly
– Dependence on advanced technology may lead to higher initial investment

Comparison Table

Company	Product Details	Pros	Cons	Website
Top 10 O-ring Manufacturers and Suppliers in China (2024)	Hongju produces high-quality silicone rubber O-rings and high-temperature O-ring seals for various applications, including engines, pumps, cylinders,…	– High-quality silicone rubber O-rings with strong resistance to water, oil, and h… – Custom-made O-rings available to meet specific customer needs…	– Importing from China may involve longer shipping times – Production cycle can vary from 9-15 workdays depending on quantity and complexit…	hongjusilicone.com
Large silicone store o rings – Kin by Rice n Roll	Kin by Rice n Roll is a family-run restaurant located in Wauwatosa, known for its Asian cuisine, particularly Thai and Japanese dishes. It is part of…	– Variety of Asian food and sushi – Homemade, fresh, and tasty dishes – Family-run and passionate about cooking – Modernized look and authentic taste	– Reservations can only be made 24 hours prior – No reservations on Friday and Saturday – Table will be released if more than 5 minutes late	kinbyricenroll.com
China, O-Rings & McMaster	The discussion revolves around O-rings sourced from various international locations, including China, Mexico, and potentially Taiwan. The user ordered…	– Inexpensive: The O-rings were very cheap, with prices as low as $.044 each. – Wide availability: O-rings are widely available from various suppliers…	– Quality issues: The user encountered a small tear in one of the O-rings from McM… – Uncertain origin: Many O-rings, even from reputable suppliers…	www.practicalmachinist.com
Greene Tweed Distributors	Greene Tweed designs and manufactures thermoplastics, elastomers, composites, and engineered components for demanding applications. Their products inc…	– High-performance components built for harsh industrial conditions – Custom-engineered solutions to meet specific industry needs – Durable and reliab…	– May require specialized knowledge for installation and maintenance – Could be more expensive due to high-quality materials and engineering – Limited…	www.gtweed.com
Hnbr store o rings	The Mariahilf Citycenter Hotel is a 3-star hotel located in the 15th district of Vienna, Rudolfsheim-Fünfhaus. It offers 23 rooms and is situated near…	– Convenient location near public transportation and key attractions – Free Wi-Fi and continental breakfast – Airport transfer services available – Ga…	– Some guests reported dirty rooms and bathrooms – Front office not available early in the morning	www.hotelmariahilf.at
O-Rings	China – Products	Parker NA	Parker O-rings are circular sealing elements with circular cross-sections, mainly used in static applications. They are specified by the inside diamet…	– Wide range of materials available to suit different applications and environment… – High compatibility with various fluids, gases, and chemicals….
O Ring assortment’s that don’t suck?	O-ring assortments typically include a variety of o-rings in different sizes, materials, and shapes. These assortments can be found in standard and me…	– High versatility and customizability, available in various materials and sizes. – Cost-effective, especially when purchased in bulk. – Wide availabi…	– May not be suitable for high-pressure applications without backup rings. – Can be problematic in dynamic applications involving twisting or rolling…	www.garagejournal.com
O-ring size (no tooling charge)	Precision Polymer Engineering (PPE) offers a wide range of O-ring sizes and types, including AS 568, DIN 11864, and RJT O-rings. These O-rings are ava…	– High precision and tight tolerances ensure proper fit and reliability in critica… – Fully molded O-rings eliminate weak spots at joints, reducing…	– Custom tooling may be required for non-standard sizes, which could add to the ov… – Lead times, although short, may still be a consideration for v…	www.prepol.com
ORing				www.oringnet.com
Facilities	Contact Us	John Crane offers a wide range of products including mechanical seals, seal support systems, power transmission couplings, packing materials, gaskets,…	– Wide range of sealing solutions for various industrial applications – High-quality products and exceptional customer service – Global network of ser…	– Highly specialized products may require specific expertise for installation and… – Some products, especially customized ones, can be costly – Depe…

Frequently Asked Questions (FAQs)

Frequently Asked Questions About O-Ring Factories in China

What types of materials are commonly used to manufacture O-rings in Chinese factories?

Chinese O-ring manufacturers often use a variety of materials, including Nitrile (NBR), Fluorinated Rubber (FKM or Viton), Silicone, Ethylene Propylene Diene Monomer (EPDM), and Hydrogenated Nitrile Butadiene Rubber (HNBR). Each material has its own unique properties and is suited for different applications, such as high-temperature resistance, chemical compatibility, or food and medical-grade uses.

Can Chinese O-ring factories provide custom sizes and designs?

Yes, many Chinese O-ring factories offer custom sizes and designs to meet your specific needs. They can produce O-rings according to your drawings or samples, and some even offer one-stop OEM and ODM services. This includes customizing the design, color, packaging, and even adding your logo to the products.

What are the typical minimum order quantities (MOQs) for O-rings from Chinese manufacturers?

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

Do Chinese O-ring manufacturers adhere to international standards and certifications?

Yes, many Chinese O-ring manufacturers adhere to international standards and hold various certifications. These include ISO 9001 for quality management, ISO 13485 for medical devices, and IATF 16949 for the automotive industry. They also comply with standards such as AS568, BS1516, DIN 3771, JIS B 2401, and ISO 3601, ensuring the quality and reliability of their products.

How can I ensure the quality of the O-rings I purchase from a Chinese factory?

To ensure the quality of the O-rings, look for manufacturers that use high-quality raw materials and have a robust quality control process in place. Many factories offer free samples for testing, and they may also have certified laboratories to develop and test compounds according to your specifications. Additionally, check for certifications like ISO 9001 and other relevant industry standards.