Are you looking for the best o-ring custom factories in China to meet your specific needs? With so many options available, choosing the right one can be overwhelming. In this article, we’ll compare the top o-ring manufacturers in China, highlighting their unique strengths, services, and what sets them apart. Let’s dive in and find the perfect fit for your project.

Custom O-Rings, Custom Molded O-Ring China …

Product Details: Savvy offers custom o-rings designed and produced in various cross-sections and shapes. These o-rings are necessary when standard o-ring sizes are not available. Custom o-rings can be defined by their cross-section or outline shape. If the cross-section is outside the standard range, or if the shape is not round but square, rectangular, or irregular, it is considered a custom o-ring. To produce these, the inner diameter (ID) and cross-section (CS) are required, or a detailed drawing if the shape is irregular. Custom o-rings are used in industries such as hydraulics, oil and gas, semiconductor processing, aerospace, food processing, water filtration,

electronic products, machinery fabrications, plastic sealing, automotive, and medical equipment.

Pros:
– Custom o-rings can be tailored to specific application needs, ensuring a precise…
– Savvy has strong cost control management, offering high-quality custom o-rings a…
– The company provides a wide range of materials, including NBR, FKM, and Silicone…
– Savvy can design and produce custom o-rings with low mold/tooling costs and fast…

Cons:
– Custom o-rings are used in lower volumes than standard o-rings, resulting in hig…
– The production process requires detailed communication and cooperation between t…
– Unique or custom colors may increase the cost and require a larger minimum order…

China O Rings Manufacturers and Suppliers

Product Details: O-rings are toroidal elastomeric sealing devices designed to prevent the passage of fluids or gases between two mating surfaces under static or dynamic conditions. They are manufactured from various elastomer materials such as NBR, FKM, EPDM, and others, each with specific temperature and chemical resistance properties. O-rings are available in standard and non-standard sizes, complying with standards like AS568 and ISO 3601. They are used in a wide range of applications, including industrial, aerospace, and automotive sectors.

Pros:
– Universally applicable in many industrial applications
– Good lifetime and very good price-performance ratio
– Available in numerous standard dimensions and special elastomer materials
– Suitable for sealing various liquid and gaseous media
– Can be used in both static and dynamic sealing applications
– High resistance to chemicals, oils, and fuels depending on the material
– Compliant with industry standards such as AS568 and ISO 3601

Cons:
– Not suitable for safety-critical applications like automotive without premium qu…
– Material selection is critical and must match the specific application requireme…
– Performance can be affected by various parameters such as temperature, pressure,…
– May require special handling in vacuum applications to prevent excessive deforma…
– Limited low-temperature flexibility in some materials like NBR with high ACN con…

Custom O-ring Manufacturer and Wholesale Supplier

Product Details: Hongju Silicone offers custom and wholesale O-ring seals made from high-quality silicone and rubber materials. These O-rings are designed for various applications, including engines, pumps, cylinders, connectors, and valves. They are available in standard and custom sizes, following ISO3601 standards. The manufacturing process includes design, tool making, color mixing, compression molding, quality inspection, and packaging. Materials can be customized, including liquid silicone rubber, and the company provides free samples for testing. The O-rings are resistant to water, oil, and high temperatures, with a hardness tolerance of plus or minus 3-5A[1].

Pros:
– High-quality raw materials and precision molds ensure strong resistance to water…
– Wide selection of stock items at wholesale prices, along with customization capa…
– Fast delivery and good customer service.
– Ability to meet special needs by redesigning the mold.
– Free samples available for testing.
– Strict quality control over the production process.

Cons:
– Silicone O-rings may have poor tear resistance and are not ideal for pneumatic t…
– The hardness tolerance is limited to plus or minus 3-5A, which might not be suit…

FKM O Rings, China NBR O Ring supplier

Custom O Ring Manufacturing in China with Quick Tooling …

Product Details: O-rings are toroidal elastomeric sealing devices designed to prevent the passage of fluids or gases between two mating surfaces under static or dynamic conditions. They are made from various elastomer materials such as Nitrile, Viton, Silicone, Neoprene, and others. O-rings are available in standard sizes (compliant with AS568 and ISO 3601) and custom sizes. They are used in a wide range of applications including aerospace, automotive, medical, and industrial sectors. The o-ring’s circular cross-section creates a compression seal when installed in a properly dimensioned gland or groove, allowing it to conform to surface irregularities and maintain seal integrity across various

pressures, temperatures, and chemical environments.

Pros:
– Lightweight and compact design
– Easy to install and maintain
– Cost-effective
– Reusable depending on material and application
– Versatile and adaptable to both dynamic and static applications
– High-sealing capabilities in low- or high-stress environments

Cons:
– Failure can occur due to improper installation, inadequate lubrication, abrasion…
– Chemical attack and swelling are primary causes of o-ring failure
– Custom o-rings can present additional costs upfront

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 30 of the most popular sizes, with a total of 382-447 pieces depending on the type. The O-rings are made from commercial grade nitrile butadiene rubber (NBR) and fluorinated rubber (FKM), offering excellent oil and chemical resistance. The material hardness ranges from 60-90 Shore A, and the temperature range is -40 to 260°C. The kit is suitable for various applications, including machines, excavators, cars, doors, windows, and electric appliances. The O-rings are UV resistant and have a thick-walled construction for maximum protection and durability.

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
– UV resistant and suitable for liquids such as oil
– Thick-walled construction for long-term durability
– Practical resealable plastic case
– Certified with ISO9001/TS16949 standards
– Suitable for both home and professional use

Cons:
– No specific cons mentioned, but users need to ensure the correct material and si…

O Rings Manufacturer | O Rings Supplier – Hongjie Rubber Seal

Product Details: Hongjie Rubber Seal offers a wide range of O-rings with various custom options. As a professional O-ring manufacturer in China since 2000, they provide one-stop OEM/ODM solutions. The company offers custom designs, colors, packaging, and logos. They adhere to various international O-Ring standards and sizes, with most sizes already tooling available to avoid additional investment. Hongjie uses well-known raw material suppliers to ensure basic product quality and certificated compounds to meet specific market requirements. They also have a certified laboratory to develop and identify compounds according to specifications or ASTM D200 call outs.

Pros:
– One-stop OEM/ODM solution with custom design, color, packaging, and logo options…
– Adherence to various international O-Ring standards and sizes.
– Use of high-quality raw materials from well-known suppliers.
– Certificated compounds to meet specific market requirements.
– Certified laboratory for compound development and identification.
– Rapid prototyping and emergency production capabilities.
– IAFT 16949 certified with strict quality control standards.

Cons:
– Limited information on minimum order quantities or lead times.
– No explicit mention of environmental or sustainability practices.

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

Product Details: Savvy Rubber manufactures a wide range of o-rings, including traditional standard o-rings, encapsulated o-rings, backup-rings, and x-rings. They offer various materials such as NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, Aflas, etc. The temperature range for these materials varies: -70°C to 220°C for Silicone, and different ranges for other materials. 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 can be produced in various colors, and the company can arrange for custom colors with the provision of RAL or Pantone color numbers. They have thousands of molds

and can meet different size and shape requirements with fast delivery options.

Pros:
– High-quality materials with good properties and low cost, especially NBR which i…
– Wide range of materials available, including FDA-grade Silicone for medical and…
– High-temperature resistance, with Silicone capable of withstanding -70°C to 220°…
– Custom o-ring production at low mold/tooling costs and fast delivery.
– Variety of colors available, including standard and custom options.
– Comprehensive compatibility with various chemical elements and applications.

Cons:
– Low hardness o-rings can be prone to peeling, installation damage, extrusion, an…
– High hardness o-rings can be inconvenient to install.
– Unique or custom colors may increase the cost and require a larger minimum order…

Stainless O Ring Manufacturer in China – HM

Product Details: The manufacturing process of stainless steel O-rings at HM involves precision CNC machining. It starts with the selection of high-quality stainless steel material. These O-rings are designed to provide excellent corrosion resistance, high strength, and durability. They are suitable for various industries, including chemical processing, food processing, and medical equipment. The O-rings can be customized to meet specific requirements, including different sizes, materials, and surface finishes.

Pros:
– Excellent corrosion resistance
– High strength and durability
– Customizable to meet specific requirements
– Suitable for various industries such as chemical processing, food processing, an…

Cons:
– No specific cons mentioned on the website
– May require additional processing for certain applications

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

Product Details: Xiamen Seals Technology Co., Ltd. offers a wide range of seal products, including O-Rings, X-Rings, and custom molded rubber components. Their product lineup includes Buna-N Standard O-Rings, Spliced and Vulcanized O-Rings, and Colored EPDM O-Rings. They also provide silicone custom rubber parts with FDA certification. The company has a complete production chain from R&D, rapid prototypes, mold design, mold making, component production, assembling, and packing to export. Their products are used in various applications and are available in both standard and metric sizes.

Pros:
– High-quality molded rubber products
– Complete production chain from R&D to export
– Custom design capabilities to meet specific specifications
– Variety of materials available, including Buna-N, FKM, and EPDM
– FDA-certified silicone custom rubber parts
– Good service and quality products

Cons:
– Limited information on specific product pricing
– No detailed information on lead times or delivery schedules
– Dependence on providing detailed specifications and prints for custom designs

Comparison Table

Company	Product Details	Pros	Cons	Website
Custom O-Rings, Custom Molded O-Ring China …	Savvy offers custom o-rings designed and produced in various cross-sections and shapes. These o-rings are necessary when standard o-ring sizes are not…	– Custom o-rings can be tailored to specific application needs, ensuring a precise… – Savvy has strong cost control management, offering high-qualit…	– Custom o-rings are used in lower volumes than standard o-rings, resulting in hig… – The production process requires detailed communication and coo…	savvyrubber.com
China O Rings Manufacturers and Suppliers	O-rings are toroidal elastomeric sealing devices designed to prevent the passage of fluids or gases between two mating surfaces under static or dynami…	– Universally applicable in many industrial applications – Good lifetime and very good price-performance ratio – Available in numerous standard dimens…	– Not suitable for safety-critical applications like automotive without premium qu… – Material selection is critical and must match the specific app…	www.svks-rubberseal.com
Custom O-ring Manufacturer and Wholesale Supplier	Hongju Silicone offers custom and wholesale O-ring seals made from high-quality silicone and rubber materials. These O-rings are designed for various…	– High-quality raw materials and precision molds ensure strong resistance to water… – Wide selection of stock items at wholesale prices, along with…	– Silicone O-rings may have poor tear resistance and are not ideal for pneumatic t… – The hardness tolerance is limited to plus or minus 3-5A, which…	hongjusilicone.com
FKM O Rings, China NBR O Ring supplier				www.o-ringsseals.com
Custom O Ring Manufacturing in China with Quick Tooling …	O-rings are toroidal elastomeric sealing devices designed to prevent the passage of fluids or gases between two mating surfaces under static or dynami…	– Lightweight and compact design – Easy to install and maintain – Cost-effective – Reusable depending on material and application – Versatile and adap…	– Failure can occur due to improper installation, inadequate lubrication, abrasion… – Chemical attack and swelling are primary causes of o-ring fail…	rubberproducer.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 30 of the most popular sizes, with a total of 3…	– High-quality materials (NBR and FKM) providing excellent oil and chemical resist… – Wide range of sizes (30 sizes) to fit various applications – U…	– No specific cons mentioned, but users need to ensure the correct material and si…	www.nokcn-seals.com
O Rings Manufacturer	O Rings Supplier – Hongjie Rubber Seal	Hongjie Rubber Seal offers a wide range of O-rings with various custom options. As a professional O-ring manufacturer in China since 2000, they provid…	– One-stop OEM/ODM solution with custom design, color, packaging, and logo options… – Adherence to various international O-Ring standards and sizes….	– Limited information on minimum order quantities or lead times. – No explicit mention of environmental or sustainability practices.
O-Rings, Rubber Seals – Best China Manufacturer & …	Savvy Rubber manufactures a wide range of o-rings, including traditional standard o-rings, encapsulated o-rings, backup-rings, and x-rings. They offer…	– High-quality materials with good properties and low cost, especially NBR which i… – Wide range of materials available, including FDA-grade Silicon…	– Low hardness o-rings can be prone to peeling, installation damage, extrusion, an… – High hardness o-rings can be inconvenient to install. – Unique…	savvyrubber.com
Stainless O Ring Manufacturer in China – HM	The manufacturing process of stainless steel O-rings at HM involves precision CNC machining. It starts with the selection of high-quality stainless st…	– Excellent corrosion resistance – High strength and durability – Customizable to meet specific requirements – Suitable for various industries such as…	– No specific cons mentioned on the website – May require additional processing for certain applications	hmaking.com
Xiamen Seals Technology Co.,Ltd: China O-Rings, X- …	Xiamen Seals Technology Co., Ltd. offers a wide range of seal products, including O-Rings, X-Rings, and custom molded rubber components. Their product…	– High-quality molded rubber products – Complete production chain from R&D to export – Custom design capabilities to meet specific specifications – Va…	– Limited information on specific product pricing – No detailed information on lead times or delivery schedules – Dependence on providing detailed spe…	www.sealsmanufacturer.com

Frequently Asked Questions (FAQs)

What materials can custom o-ring factories in China use for production?

Custom o-ring factories in China can produce o-rings using a variety of materials, including nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), silicone, fluororubber (FKM), and more. These materials are chosen based on the specific requirements of your application, such as resistance to high temperatures, chemicals, or oils.

Can I customize the design, color, and packaging of my o-rings?

Yes, you can customize the design, color, and packaging of your o-rings. Many Chinese manufacturers offer OEM and ODM services, allowing you to specify the exact design, color, and packaging that meet your needs. They can also add your logo or other custom elements to the o-rings.

What is the typical minimum order quantity (MOQ) for custom o-rings in China?

The minimum order quantity (MOQ) for custom o-rings in China can vary depending on the manufacturer. Some companies have low MOQs, such as 10 or 100 pieces, while others may require larger orders, typically in the range of 500 to 5,000 pieces. It’s best to check with the specific manufacturer for their MOQ policies.

How do Chinese manufacturers ensure the quality of their custom o-rings?

Chinese manufacturers ensure the quality of their custom o-rings through strict quality control processes. This includes using high-quality raw materials, precision molds, and both manual and machine testing of all products. Many of these manufacturers also hold international certifications such as ISO 9001, ISO 13485, and IATF16949.

Can I get free samples before placing a large order for custom o-rings?

Yes, many Chinese manufacturers offer free samples for testing before you place a large order. This allows you to check the quality and specifications of the o-rings to ensure they meet your requirements. Companies like Hongju Silicone and others provide this service to build trust and ensure customer satisfaction.