Are you looking for the best O-ring manufacturers in China? With so many options available, choosing the right one can be overwhelming. In this article, we’ll compare the top O-ring factories in China, highlighting their strengths, product ranges, and what sets them apart. Let’s dive in and find the perfect fit for your needs.
China O Rings Manufacturers and Suppliers
O-Rings, Rubber Seals – Best China Manufacturer & …
Product Details: Savvy manufactures a wide range of o-rings made from various materials including rubber, metal, and other materials. The most commonly used o-ring materials are NBR, FKM (Viton), and Silicone. NBR is widely used due to its good properties and low cost. FKM/Viton offers the best comprehensive performance and is used in high-standard sealing equipment. Silicone is often used in medical and food industries due to its FDA compliance, tastelessness, non-toxicity, and resistance to high temperatures and severe cold. The temperature range for these o-rings varies, with VMQ/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 60-70 being the most common. O-rings are available in various colors and can be customized to meet specific needs.
Pros:
– High-temperature and FDA food grade options available
– Wide range of materials to suit different working conditions
– Good wear resistance and oil resistance
– Easy to install
– Customizable sizes, shapes, and colors
– Low mold/tooling cost and fast delivery
Cons:
– Low hardness o-rings prone to peeling, installation damage, extrusion, and press…
– High hardness o-rings can be inconvenient to install
– Unique colors may increase cost and require larger MOQ with longer delivery time
Custom O-Rings, Custom Molded O-Ring China …
Product Details: Savvy Rubber offers custom o-rings designed and produced to meet specific requirements. These o-rings can be customized in terms of cross-section and outline shape. For standard cross-sections, only the inner diameter (ID) and cross-section (CS) are needed. For non-round shapes, a drawing is required, which can be designed by Savvy if not provided. Custom o-rings are used in various industries such as hydraulics, oil and gas, semiconductor processing, aerospace, food processing, water filtration, electronic products, machinery fabrications, plastic sealing, automotive, and medical equipment. Materials include NBR, FKM, Silicone, and others, with hardness ranging from Shore A 40 to 90. Colors
can be customized using standard RAL or Pantone color numbers.
Pros:
– Strong cost control management resulting in low prices while maintaining high qu…
– Ability to produce o-rings in various cross-sections and shapes, including non-r…
– Wide range of materials available, including NBR, FKM, and Silicone.
– Customizable colors using RAL or Pantone color numbers.
– Experience in the OEM o-ring industry for many years.
Cons:
– Higher price compared to standard o-rings due to the custom nature.
– Requires close communication and cooperation for designing non-standard shapes i…
– Unique colors may increase cost and require a larger minimum order quantity (MOQ…
China O-Ring Kits Suppliers – NNK Oil Seal
Product Details: The Universal Type O-Ring Kit Box 30 size is a professional-quality assortment of O-rings. It includes 382 pieces of O-rings in 30 of the most popular sizes, both in inches and millimeters. The O-rings are made from commercial-grade nitrile butadiene rubber (NBR) and fluoroelastomer (FKM) materials, offering oil, chemical, and high-pressure resistance. The kit is suitable for various applications, including machines and excavators. The O-rings have a hardness range of 60-90 Shore A and can operate in temperatures from -40°C to 260°C. The kit comes in a practical resealable plastic case and is certified with ISO9001/TS16949 standards.
Pros:
– High-quality materials (NBR and FKM) providing excellent oil and chemical resist…
– Wide range of sizes (30 sizes) to fit various applications
– Suitable for high-pressure and harsh environments
– Durable and long-lasting with UV resistance
– Practical resealable plastic case for storage
– Certified with ISO9001/TS16949 standards ensuring high quality
Cons:
– Limited to specific materials (NBR and FKM), which may not be suitable for all a…
– No mention of availability for custom sizes or special orders beyond the standar…
– May require additional backup rings for elevated operating pressure environments
Top 10 O-ring Manufacturers and Suppliers in China (2024)
china manufacture black NBR 70 rubber o-ring with high …
30-80 Durometer colored elastic large diameter o-rings
Product Details: The 30-80 Durometer colored elastic large diameter o-rings are made from high-quality materials such as Nitrile rubber (NBR), Viton, and Silicone. These o-rings have a hardness range of 30 to 80 Shore Durometer and are available in a wide range of sizes, with inner diameters (ID) from 0.8mm to 572mm and cross-sections from 0.4mm to 17.27mm. They are designed to be highly elastic and resilient, with properties including high temperature resistance, abrasion resistance, and oil resistance. The o-rings are suitable for various applications, including excavators, and are manufactured to avoid tooling costs with over 1000 existing sizes available.
Pros:
– Made from high-quality, durable rubber
– High temperature resistance
– Abrasion resistant
– Oil resistant
– Available in a variety of commonly used materials (Silicone, Neoprene, Nitrile,…
– Wide range of sizes available (ID: 0.8~572mm, Cross Section: 0.4~17.27mm)
– Tooling costs avoided with over 1000 existing sizes
Cons:
– No specific cons mentioned for these o-rings, but general limitations of the mat…
Metric Size O-ring
Product Details: Metric O-rings are defined by their internal diameter (ID) and cross-section (CS). They are manufactured according to the ISO 3601-1 standard and are used in various applications including valves, engine components, hydraulics, and more. These O-rings are made from different materials such as Buna-N Nitrile rubber, silicone, and other elastomers, each chosen for specific properties like chemical compatibility, temperature range, and sealing pressure. The dimensions include outside diameter (OD), inside diameter (ID), and cross-section, with specific tolerances for each range of cross-section sizes.
Pros:
– Highly reliable and inexpensive for sealing applications.
– Available in a wide range of sizes and materials to meet different sealing requi…
– Can be used in high-pressure and hydraulic applications.
– Offered in various durometer options for different levels of hardness and flexib…
Cons:
– Requires careful selection of material and size to ensure compatibility with the…
– Tolerances must be considered to ensure proper fit and performance.
– May not be suitable for all chemical or temperature environments without proper…
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, organic and inorganic acids, alkali, ester, ether, ketone, aldehyde, superheated water, and steam. The maximum operating temperature is 230 °C (446 °F), and they can be fabricated into various forms such as O-rings, diaphragms, gaskets, rubber strips, and rubber plates. Key mechanical properties include a hardness of Shore A 78, 100% modulus of 9.4 MPa, tensile strength of 15.9 MPa, elongation at break of 130%, and a compression set of 20.7% after 70 hours at
204 °C[1].
Pros:
– Highest temperature resistance among rubber O-ring materials, up to 620 °F (326…
– Excellent chemical resistance to a wide range of aggressive chemicals, including…
– High thermal, oxidative, and chemical stability due to carbon-fluorine bonds[1][…
– Long service life and reliability in dynamic and static applications[3]
– Low off-gassing and extractable levels, making them suitable for clean and sensi…
Cons:
– Poor low temperature performance[3]
– Significantly more costly than standard FKM materials[3]
– Lower tensile strength compared to some other elastomers[4]
International Ring Size Conversion Chart: US, Australia, …
Product Details: The website likely provides tools and methods for measuring ring sizes. Common methods include using a ring sizer, a printable DIY ring size measuring kit, or the string method. A ring sizer is an adjustable tool that allows you to find your exact ring size by trying on different sizes. The printable DIY kit involves cutting out a ring size chart and wrapping it around your finger to measure. The string method involves wrapping a string around your finger, marking the overlap, and measuring the length to determine your ring size.
Pros:
– Accurate measurements can be achieved using a ring sizer or printable DIY kit.
– Methods are often easy to use and do not require a visit to a jewelry store.
– Options like sizing beads, spring inserts, and fold-over sizing bars provide alt…
Cons:
– Printable DIY kits require careful cutting and measurement to ensure accuracy.
– String method may not be as precise as using a dedicated ring sizer.
– Alternatives to permanent resizing, such as sizing beads or spring inserts, may…
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| China O Rings Manufacturers and Suppliers | www.svks-rubberseal.com | |||
| O-Rings, Rubber Seals – Best China Manufacturer & … | Savvy manufactures a wide range of o-rings made from various materials including rubber, metal, and other materials. The most commonly used o-ring mat… | – High-temperature and FDA food grade options available – Wide range of materials to suit different working conditions – Good wear resistance and oil… | – Low hardness o-rings prone to peeling, installation damage, extrusion, and press… – High hardness o-rings can be inconvenient to install – Unique… | savvyrubber.com |
| Custom O-Rings, Custom Molded O-Ring China … | Savvy Rubber offers custom o-rings designed and produced to meet specific requirements. These o-rings can be customized in terms of cross-section and… | – Strong cost control management resulting in low prices while maintaining high qu… – Ability to produce o-rings in various cross-sections and shape… | – Higher price compared to standard o-rings due to the custom nature. – Requires close communication and cooperation for designing non-standard shapes… | savvyrubber.com |
| China O-Ring Kits Suppliers – NNK Oil Seal | The Universal Type O-Ring Kit Box 30 size is a professional-quality assortment of O-rings. It includes 382 pieces of O-rings in 30 of the most popular… | – High-quality materials (NBR and FKM) providing excellent oil and chemical resist… – Wide range of sizes (30 sizes) to fit various applications – S… | – Limited to specific materials (NBR and FKM), which may not be suitable for all a… – No mention of availability for custom sizes or special orders… | www.nokcn-seals.com |
| Top 10 O-ring Manufacturers and Suppliers in China (2024) | hongjusilicone.com | |||
| china manufacture black NBR 70 rubber o-ring with high … | www.dmsseals.com | |||
| 30-80 Durometer colored elastic large diameter o-rings | The 30-80 Durometer colored elastic large diameter o-rings are made from high-quality materials such as Nitrile rubber (NBR), Viton, and Silicone. The… | – Made from high-quality, durable rubber – High temperature resistance – Abrasion resistant – Oil resistant – Available in a variety of commonly used… | – No specific cons mentioned for these o-rings, but general limitations of the mat… | www.melon-rubber.com |
| Metric Size O-ring | Metric O-rings are defined by their internal diameter (ID) and cross-section (CS). They are manufactured according to the ISO 3601-1 standard and are… | – Highly reliable and inexpensive for sealing applications. – Available in a wide range of sizes and materials to meet different sealing requi… – Ca… | – Requires careful selection of material and size to ensure compatibility with the… – Tolerances must be considered to ensure proper fit and perform… | www.xmbestseal.com |
| Perfluoroelastomer FFKM O ring Manufacturer | FFKM O-rings are made of perfluoroelastomer compounds with a higher fluorine content than FKM fluoroelastomers. They are known for their excellent res… | – Highest temperature resistance among rubber O-ring materials, up to 620 °F (326… – Excellent chemical resistance to a wide range of aggressive che… | – Poor low temperature performance[3] – Significantly more costly than standard FKM materials[3] – Lower tensile strength compared to some other elast… | www.jst-seals.com |
| International Ring Size Conversion Chart: US, Australia, … | The website likely provides tools and methods for measuring ring sizes. Common methods include using a ring sizer, a printable DIY ring size measuring… | – Accurate measurements can be achieved using a ring sizer or printable DIY kit. – Methods are often easy to use and do not require a visit to a jewel… | – Printable DIY kits require careful cutting and measurement to ensure accuracy. – String method may not be as precise as using a dedicated ring sizer… | www.betterthandiamond.com |
Frequently Asked Questions (FAQs)
What are the common materials used by O-ring factories in China?
O-ring factories in China use a variety of materials to manufacture O-rings, 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 specific industry requirements.
How do I specify the size of an O-ring when ordering from a Chinese factory?
When ordering O-rings from a Chinese factory, you need to specify the inside diameter (ID), outside diameter (OD), and the cross-section (CS) or width. For example, an O-ring size might be given as ID 20 x CS 2 mm. You can also refer to international standards like AS568, BS1516, or ISO 3601 to ensure you get the right size.
Can Chinese O-ring factories provide custom sizes and designs?
Yes, many Chinese O-ring factories offer custom sizes and designs. They can produce O-rings according to your specific drawings or samples. Some factories also provide one-stop OEM/ODM solutions, allowing you to customize not only the size but also the design, color, packaging, and even the logo on the O-rings.
What are the typical minimum order quantities (MOQs) for O-rings from Chinese factories?
The minimum order quantities (MOQs) for O-rings from Chinese factories can vary widely. Some factories may have MOQs as low as 10-100 pieces, while others may require orders of 500-50,000 pieces. It’s important to check with the specific factory you’re interested in to understand their MOQ requirements.
How do I ensure the quality of O-rings from Chinese manufacturers?
To ensure the quality of O-rings from Chinese manufacturers, look for factories that are ISO 9001 certified and have other relevant industry certifications like ISO 13485 or IATF16949. Many reputable factories also offer free samples for testing and have well-equipped laboratories to develop and test compounds according to your specifications. Additionally, check for customer reviews and ask about their quality control processes.