Are you looking for the best o-ring seal factories in China? With so many options available, it can be overwhelming to choose the right one. In this article, we’ll compare some of the top o-ring manufacturers in China, highlighting their strengths, materials, and what sets them apart. Let’s dive in and find the perfect fit for your needs.
Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司
China O Rings Manufacturers and Suppliers
FKM O Rings, China NBR O Ring supplier
Product Details: The products offered by www.o-ringsseals.com include a wide range of o-ring seals made from various materials such as NBR, FKM, EPDM, HNBR, ACM, NR, and more. These o-rings are available in different hardness levels (20 Shore A to 90 Shore A), colors, and sizes, including customized and standard sizes like AS568 and ISO 3601. The products are certified with ISO9001, TS16949, FDA, RoHS, and REACH compliance. They are used in various applications including automotive, construction machinery, machine tool equipment, food, health, water treatment, and chemical processing. The company, ORK, has two factories located in Shangrao City, Jiangxi Province, and Dongguan
City, Guangdong Province, and offers OEM production based on customer drawings or samples[1][3][5].
Pros:
– Good shock-proof, heat insulation, and sound insulation performance.
– Excellent flexibility and anti-compressive deformation, chemical resistance.
– High temperature resistance and low temperature resistance capabilities.
– Long service life and good sealing solutions.
– Easy installation reduces risk.
– Customizable specifications, packing requirements, and colors according to custo…
– Immediate delivery available from a large inventory of over 300 million o-rings.
– Experienced staff providing fluent English support and quick response to inquiri…
Cons:
– Minimum Order Quantity (MOQ) requirements, which can be a barrier for small orde…
– Payment terms require 100% payment in advance for orders under $1000 (or $2000 i…
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, adhering to ISO3601 standards for dimensions and tolerances. They use high-quality raw materials and precision molds to ensure the products meet various extreme use environments. The manufacturing process includes design, tool making, color mixing, compression molding, quality inspection, and packaging according to customer requirements[1].
Pros:
– High-quality silicone rubber O-rings with strong resistance to water, oil, and h…
– Customization capabilities to meet specific customer needs
– Strict quality control over the production process
– Compliance with international safety standards such as CE, SGS, REACH, and ROHS…
– Advanced equipment and well-trained staff ensure quality and reliability
– Low minimum order quantity (MOQ) and rapid prototyping available
– Products are eco-friendly and made from environmentally friendly materials
Cons:
– Importing from a Chinese manufacturer may involve longer shipping times
– Factory inspections may be limited due to epidemic restrictions, though online i…
– Production cycle can vary depending on the quantity and complexity of the order
China O-Ring Kits Suppliers – NNK Oil Seal
Product Details: The Universal Type O-Ring Kit Box 30 size is a comprehensive assortment of O-rings made from commercial grade nitrile butadiene rubber (NBR) and fluoroelastomer (FKM) formulations. The kit includes 382-419 pieces depending on the type, with sizes available in both inches and millimeters. The O-rings are characterized by their oil, chemical, and high-pressure resistance, and they have a temperature range of -40 to 260°C. They are suitable for various applications including machines, excavators, cars, doors, windows, electric appliances, bearings, and pumps. The kit is ISO9001/TS16949 certified and meets ASTM D 2000 standards. The O-rings have a hardness of 60-90 Shore
A and are available in black, brown, red, and clear colors.
Pros:
– High resistance to oils and chemicals
– Wide temperature range (-40 to 260°C)
– Suitable for various applications including machines, excavators, and automotive…
– Meets ASTM D 2000 and ISO9001/TS16949 standards
– Thick wall structure for strong sealing and durability
– UV resistant and suitable for liquids such as oil
Cons:
– Limited information on specific usage conditions that might require special mate…
– No mention of availability for custom sizes beyond the standard kits offered
– Requires careful selection of material and dimensions to match usage conditions…
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 high-temperature resistance, tastelessness, and non-toxicity. Other materials include EPDM, HNBR, CR, and Aflas. O-rings are available in various hardness levels, typically measured in Shore A units, ranging from 40 to 90, with 60-70 being
the most common. They also come in different colors, with standard colors recommended for cost and identification purposes.
Pros:
– High-temperature resistance: Silicone o-rings can operate from -70°C to 220°C.
– Good chemical resistance: Different elastomers have varying compatibility with c…
– Wide material options: Available in NBR, FKM/Viton, Silicone, EPDM, HNBR, CR, an…
– Customizable: Savvy can produce custom o-rings at low mold/tooling costs with fa…
– Variety of applications: Suitable for medical, food, automotive, and other indus…
Cons:
– Installation challenges: Higher hardness o-rings can be inconvenient to install.
– Material limitations: Different materials have specific limitations, such as NBR…
– Cost considerations: Unique colors and custom orders may increase cost and requi…
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 manufactured 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 all rubber O-ring and gasket materials, up…
– 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 criti…
Cons:
– Poor low temperature performance[3]
– Significantly more costly than standard FKM materials[3]
– Lower tensile strength compared to some other elastomers[4]
Viton O Ring Suppliers, Manufacturers, Factory
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 silicone rubber O-rings. They provide one-stop O rings OEM/ODM solutions with options for custom design, color, packaging, and logo. The company adheres to various international O-Ring standards, and most sizes are already tooling, eliminating the need for additional investment. They use well-known raw material suppliers to guarantee product quality and have certificated compounds to meet specific market requirements. Their laboratory is equipped to develop and identify compounds per customer 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, no additional investment needed
– Suitable and well-known raw material suppliers
– Certificated compounds to meet specific markets
– Certificated laboratory for compound development and identification
Cons:
– No specific information on pricing or cost-effectiveness provided on the page
– No detailed information on the production process or quality control measures
Xiamen Seals Technology Co.,Ltd: China O-Rings, X- …
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| Xiamen Xlong Seal Co.,Ltd 厦门旭隆密封件有限公司 | www.oring-seal.com | |||
| China O Rings Manufacturers and Suppliers | www.svks-rubberseal.com | |||
| FKM O Rings, China NBR O Ring supplier | The products offered by www.o-ringsseals.com include a wide range of o-ring seals made from various materials such as NBR, FKM, EPDM, HNBR, ACM, NR, a… | – Good shock-proof, heat insulation, and sound insulation performance. – Excellent flexibility and anti-compressive deformation, chemical resistance…. | – Minimum Order Quantity (MOQ) requirements, which can be a barrier for small orde… – Payment terms require 100% payment in advance for orders under… | www.o-ringsseals.com |
| Top 10 O-ring Manufacturers and Suppliers in China (2024) | 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… | – High-quality silicone rubber O-rings with strong resistance to water, oil, and h… – Customization capabilities to meet specific customer needs – S… | – Importing from a Chinese manufacturer may involve longer shipping times – Factory inspections may be limited due to epidemic restrictions, though on… | hongjusilicone.com |
| China O-Ring Kits Suppliers – NNK Oil Seal | The Universal Type O-Ring Kit Box 30 size is a comprehensive assortment of O-rings made from commercial grade nitrile butadiene rubber (NBR) and fluor… | – High resistance to oils and chemicals – Wide temperature range (-40 to 260°C) – Suitable for various applications including machines, excavators, an… | – Limited information on specific usage conditions that might require special mate… – No mention of availability for custom sizes beyond the standar… | www.nokcn-seals.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 resistance: Silicone o-rings can operate from -70°C to 220°C. – Good chemical resistance: Different elastomers have varying compati… | – Installation challenges: Higher hardness o-rings can be inconvenient to install. – Material limitations: Different materials have specific limitatio… | savvyrubber.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 all rubber O-ring and gasket materials, up… – 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 |
| Viton O Ring Suppliers, Manufacturers, Factory | www.seal-china.com | |||
| O Rings Manufacturer | O Rings Supplier – Hongjie Rubber Seal | Hongjie Sealing Technology offers a wide range of O-ring products, including custom O-rings, rubber O-rings, and silicone rubber O-rings. They provide… | – One-stop O rings OEM/ODM solution – Custom options: design, color, packaging, logo – Various international O-Ring standards – Most sizes already too… | – No specific information on pricing or cost-effectiveness provided on the page – No detailed information on the production process or quality control… |
| Xiamen Seals Technology Co.,Ltd: China O-Rings, X- … | www.sealsmanufacturer.com |
Frequently Asked Questions (FAQs)
Frequently Asked Questions About O-Ring Seal Factories in China
What types of materials are commonly used by o-ring seal factories in China?
O-ring seal factories in China use a variety of materials, including Nitrile (NBR), Ethylene Propylene Diene Monomer (EPDM), Fluorinated Rubber (FKM/Viton), Silicone (VMQ), 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 resistance, or food-grade uses.
Can Chinese o-ring factories produce custom-sized o-rings?
Yes, many o-ring factories in China offer custom-sized o-ring production. They have extensive mold libraries and can create o-rings according to your specific drawings or samples. This flexibility allows you to get the exact size and shape you need for your particular application.
What are the typical lead times for ordering o-rings from Chinese factories?
The lead times for ordering o-rings from Chinese factories can vary depending on the season and the complexity of the order. Generally, peak season lead times are within 15 workdays, while off-season lead times can be up to one month. Some factories also offer expedited shipping options to get your products to you faster.
Do Chinese o-ring factories adhere to international quality standards?
Yes, many o-ring factories in China adhere to international quality standards such as ISO 9001, ISO 14001, and IATF 16949. These certifications ensure that the products meet rigorous quality and safety standards, giving you confidence in the reliability and performance of the o-rings.
How do I ensure the quality and reliability of o-rings from Chinese suppliers?
To ensure the quality and reliability of o-rings from Chinese suppliers, look for factories that are audited suppliers and have relevant certifications like ISO 9001. You can also request samples before placing a large order and check for customer reviews and testimonials. Additionally, clear communication with the supplier about your specific needs and quality expectations is crucial.