Ever wondered where the best O-rings in the world come from? Many top-quality O-rings are manufactured in China, but choosing the right factory can be tricky. Comparing the top Chinese O-ring factories is crucial for securing reliable quality, competitive pricing, and timely delivery – essential for any business. Knowing the best options saves you time, money, and potential headaches down the line. Ready to discover the cream of the crop? Let’s dive into our comparison of China’s leading O-ring manufacturers!

Top 10 O-ring Manufacturers and Suppliers in China 2023 – Hongju

Product Details: O-rings (standard and metric sizes), silicone rubber parts, gaskets, seals, keypads, grommets, neoprene gaskets, medical silicone products, plastic o-rings, gaskets, seals, extrusion parts, suction cups, grommets, hoses, hydraulic and pneumatic seals, encapsulated o-rings, auto power steering PTFE seals, hydraulic cylinder seals, rotary o-ring seal, stainless steel PTFE oil seal, cord oil seal, oil seals, hydraulic seals, rubber seals, liquid silicone rubber parts, pneumatic seals, silicone accessories, o-ring seal, rubber gaskets, oil seal covers, pump valve oil seals, hydraulic seals, o-ring seal, o-ring kit, bearing seal/strip, oil and wiper seal, sealing strips, rubber cords, EPDM rubber seals, square rings, rotary, scraper,

and piston seals, bonded seals, gaskets, oil seals

Technical Parameters:
– standard and metric sizes
– various materials like NBR, EPDM, and HNBR

Application Scenarios:
– static and dynamic applications
– high-tech equipment
– construction industry
– automotive industry
– auto power steering gears
– aerospace industry
– automotive industry
– hardware
– medical equipment
– military
– chemical industry
– automobile seals
– valves
– pipelines
– bearings
– automobiles
– valves
– machines

Pros:
– wide range of products
– fast delivery
– good customer service
– well-equipped production facility
– diverse material offerings
– no MOQ for customized parts
– diverse product catalog
– good service
– hydraulic and pneumatic products
– export license
– international clients
– good customer service
– customization available
– variety of products
– good customer service
– focus on research and development
– extensive product categories
– hassle-free transportation
– strong customer service
– excellent quality assurance
– variety of products
– good customer service
– diversified catalog of products
– quick delivery
– designing services
– excellent production and testing equipment
– partnership with research institutions at domestic and international levels

Cons:
– insufficient information

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

Product Details: Viton O-rings are highly durable synthetic rubber O-rings designed to withstand extreme environments, including high pressure and temperatures, and resistant to flame, chemicals, oils, and fluids. They are available in standard and custom sizes.

Technical Parameters:
– High pressure tolerance
– High temperature tolerance
– Chemical resistance
– Flame resistance

Application Scenarios:
– Mechanical
– Automotive
– Electrical
– Pharmaceutical
– Medical
– Aerospace
– Chemical processing
– Petroleum

Pros:
– High durability
– Resistance to extreme environments
– Customization capabilities
– Low MOQ (for some manufacturers)
– Competitive pricing (from China)

Cons:
– Generic placeholder for cons
– Generic placeholder for cons

Custom Rubber Seals & O-rings Manufacturer | Haisun Rubber

Product Details: Custom rubber seals and high-precision O-rings. Specific types include NBR, HNBR, VMQ, FKM, EPDM, ACM, and CR O-rings; oil seals; rubber x-rings; rubber gaskets; rubber grommets; custom rubber parts; and O-ring kits.

Technical Parameters:
– O-ring tolerance up to ±0.01 mm
– Rubber seals tolerance up to 0.02 mm
– Reduced wire diameter to 0.08
– Reduced inner diameter to 0.14
– Reduced outer diameter to 0.3

Application Scenarios:
– Smartphones
– Watches
– Automotive parts
– Security systems
– Aerospace
– Communication equipment
– Medical devices
– Food machinery
– Electronic accessories
– Drinking water treatment
– Wastewater treatment

Pros:
– IATF16949 certified factory
– ISO Class-100,000 clean rooms for assembly and relubrication
– 30 years of expertise
– 50 million O-rings produced per day
– Complete manufacturing process including mold design, rubber mixing, vulcanizati…
– Strict testing on physical properties (tensile strength, aging resistance, compr…
– Materials passing third-party certifications like ROHS, REACH, FDA

Cons:
– Generic placeholder
– Generic placeholder

Viton O Ring Suppliers, Manufacturers, Factory – Kaxite Sealing

Product Details: Viton O-Ring (FKM O-Ring) is a fluorocarbon rubber O-ring offering excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hydraulic fluids, fuels, aromatics, and many organic solvents and chemicals. It has low gas permeability and is commonly used as gaskets in fuel system sealing applications. Available in black/yellow. Model: KXT 1710.

Technical Parameters:
– Specific gravity: 1.75-2g/cm3
– Hardness: 65°-95 Shore A
– Tensile strength: 7 MPa (min)
– Elongation at break: 200% (min)
– Compression set 200°C 22 hrs: Permanent set 25% (max)
– Tear strength: 25 N/mm (min)
– Temperature range: -30°C to +250°C

Application Scenarios:
– Off-Highway and Heavy-Duty Equipment
– Chemical Processing and Transportation
– Petroleum Refining and Transportation
– Aircrafts and Aerospace
– Automotive

Pros:
– Long-lasting, saving money
– Excellent resistance to high temperatures
– Excellent permeation resistance
– Moderate short-term resilience
– Resists aggressive fluids
– Good wear resistance

Cons:
– Low temperature resistance is not favorable for static applications (limited to…

Custom O-ring Manufacturer and Wholesale Supplier – Hongju

Product Details: Custom and standard size silicone rubber O-rings and high-temperature O-ring seals. Available in various colors and materials. Manufactured using compression molding.

Technical Parameters:
– Hardness tolerance: ±3-5A (customizable)
– Dimensions and tolerances follow ISO3601 standards (customizable)

Application Scenarios:
– Engines
– Pumps
– Cylinders
– Connectors
– Valves
– Various machinery (static and dynamic applications)

Pros:
– High quality
– Certified materials
– Fast turnaround time
– Competitive wholesale prices
– Customizable designs and materials
– Free samples available
– Wide selection of stock items

Cons:
– Generic placeholder
– Generic placeholder

Top 10 O-Rings Manufacturers in China – News – qlrubber.com

Product Details: O-rings, quad-rings, V-rings, rubber balls, grommets, washers, gaskets, bumpers, bushings, plugs, bellows, extrusions, rubber hoses, O-ring cord, custom-made rubber parts in various materials including FKM, NBR, Silicone, EPDM, NR, PU, CR, HNBR, SBR, IIR, SEP, Fluorosilicone, Aflas, FFKM, and special mixtures.

Technical Parameters:
– Various sizes
– Diverse choice of material and processing technology

Application Scenarios:
– Aerospace
– Automotive
– Medical
– Construction

Pros:
– Custom production capabilities
– Wide range of materials and products

Cons:
– Generic placeholder
– Generic placeholder

China O Rings Suppliers, Manufacturers, Factory – Customized O Rings …

Product Details: Jinbond offers a range of static seals including O-rings, Heavy Duty Static Seal JB-17 (alternative to O-rings and anti-extrusion rings for high-pressure applications), Spring Energized Axial Seals (Teflon jacket, cantilever or helical spring), High Pressure Spring Seals for Flange (Teflon jacket, V-shaped or helical spring), Hydraulic Teflon Back-up Rings (prevent O-ring extrusion), Hydraulic Static Seals (U-shaped slide ring, coiled metallic spring), Nitrile Rubber O-rings, and Rubber X-ring Quad Rings.

Technical Parameters:
– High pressure capabilities (JB-17)
– Material specifications (NBR, Teflon)

Application Scenarios:
– High-pressure applications
– Flange sealing
– Dynamic and static sealing
– Hydraulic systems

Pros:
– High efficiency (JB-17)
– Wide range of materials and designs

Cons:
– Insufficient information to list specific cons
– Insufficient information to list specific cons

Professional quality o-ring Seal factory

Product Details: O-rings, hydraulic & pneumatic seals, PTFE Encapsulated O-Rings

Technical Parameters:
– High quality control
– Premium material

Application Scenarios:
– Fluid engineering
– Mobile hydraulics
– Aerospace
– Automotive
– Food & drug industries

Pros:
– Good quality
– Competitive price
– Fast delivery
– Warm-hearted service

Cons:
– Insufficient information to determine cons

Quality FKM O Rings & NBR O Ring factory from China

Product Details: O-rings, gaskets, balls, grommets, and customized rubber parts. Specific examples include FKM O-rings, NBR O-rings, silicone O-rings, EPDM O-rings, O-ring kits, molded rubber parts, O-ring cord, quad rings, EPDM rubber extrusion, flat ring gaskets, rubber grommets, solid rubber balls, rubber bushings, rubber diaphragms, silicone rubber hoses, Y-ring seals, and various custom rubber parts.

Technical Parameters:
– Material: NBR, EPDM, SBR, NR, FKM, Silicone, FFKM, PU
– Hardness: Varies depending on material and product (e.g., 30-80 Shore A)
– Standards: AS568, ISO9001, ROHS, FDA (where applicable)
– Temperature Resistance: Varies depending on material (e.g., high-temperature res…
– Dimensions: Varies depending on product (e.g., metric and non-standard sizes ava…

Application Scenarios:
– Automotive fuel handling systems
– Pneumatic systems
– Water bottles
– Electric toothbrushes
– Industrial and commercial applications
– Hydraulic and pneumatic systems
– Medical applications
– Waterproofing

Pros:
– Versatile materials available to suit various applications
– Ease of installation and replacement

Cons:
– Insufficient information provided to list specific cons

Rubber O-Rings Manufacturers, Custom Bulk Sealing Rings Factory

Product Details: Custom Rubber O-Rings, Rubber Seals, Nitrile Rubber Seals, Ethylene Propylene Rubber Seals, Neoprene Rubber Seals, Silicone Rubber O-Rings Seals, Viton Rubber O-Rings Seals, Silica gel, EPDM, Fluoro rubber O-Rings.

Technical Parameters:
– Specific dimensions and materials vary depending on customer needs.
– Comply with international standards.

Application Scenarios:
– Machinery
– Household appliances
– Medical equipment
– Equipment parts
– Machinery supplies
– Mechanical pneumatic parts

Pros:
– 30 years of experience
– Custom made to customer needs
– Advanced testing equipment ensures product quality
– International standards compliant

Cons:
– No cons explicitly mentioned in the provided text.

Related Video

Comparison Table

Company	Product Details	Pros	Cons	Website
Top 10 O-ring Manufacturers and Suppliers in China 2023 – Hongju	O-rings (standard and metric sizes), silicone rubber parts, gaskets, seals, keypads, grommets, neoprene gaskets, medical silicone products, plastic o-…	– wide range of products – fast delivery – good customer service – well-equipped production facility – diverse material offerings – no MOQ for customi…	– insufficient information	hongjusilicone.com
Top 10 Viton O-ring Manufacturers and Suppliers in China(2024)	Viton O-rings are highly durable synthetic rubber O-rings designed to withstand extreme environments, including high pressure and temperatures, and re…	– High durability – Resistance to extreme environments – Customization capabilities – Low MOQ (for some manufacturers) – Competitive pricing (from Chi…	– Generic placeholder for cons – Generic placeholder for cons	hongjusilicone.com
Custom Rubber Seals & O-rings Manufacturer	Haisun Rubber	Custom rubber seals and high-precision O-rings. Specific types include NBR, HNBR, VMQ, FKM, EPDM, ACM, and CR O-rings; oil seals; rubber x-rings; rub…	– IATF16949 certified factory – ISO Class-100,000 clean rooms for assembly and relubrication – 30 years of expertise – 50 million O-rings produced per…	– Generic placeholder – Generic placeholder
Viton O Ring Suppliers, Manufacturers, Factory – Kaxite Sealing	Viton O-Ring (FKM O-Ring) is a fluorocarbon rubber O-ring offering excellent resistance to high temperatures, ozone, oxygen, mineral oil, synthetic hy…	– Long-lasting, saving money – Excellent resistance to high temperatures – Excellent permeation resistance – Moderate short-term resilience – Resists…	– Low temperature resistance is not favorable for static applications (limited to…	www.seal-china.com
Custom O-ring Manufacturer and Wholesale Supplier – Hongju	Custom and standard size silicone rubber O-rings and high-temperature O-ring seals. Available in various colors and materials. Manufactured using com…	– High quality – Certified materials – Fast turnaround time – Competitive wholesale prices – Customizable designs and materials – Free samples availab…	– Generic placeholder – Generic placeholder	hongjusilicone.com
Top 10 O-Rings Manufacturers in China – News – qlrubber.com	O-rings, quad-rings, V-rings, rubber balls, grommets, washers, gaskets, bumpers, bushings, plugs, bellows, extrusions, rubber hoses, O-ring cord, cus…	– Custom production capabilities – Wide range of materials and products	– Generic placeholder – Generic placeholder	www.qlrubber.com
China O Rings Suppliers, Manufacturers, Factory – Customized O Rings …	Jinbond offers a range of static seals including O-rings, Heavy Duty Static Seal JB-17 (alternative to O-rings and anti-extrusion rings for high-press…	– High efficiency (JB-17) – Wide range of materials and designs	– Insufficient information to list specific cons – Insufficient information to list specific cons	www.jinbondseal.com
Professional quality o-ring Seal factory	O-rings, hydraulic & pneumatic seals, PTFE Encapsulated O-Rings	– Good quality – Competitive price – Fast delivery – Warm-hearted service	– Insufficient information to determine cons	oringfactory.com
Quality FKM O Rings & NBR O Ring factory from China	O-rings, gaskets, balls, grommets, and customized rubber parts. Specific examples include FKM O-rings, NBR O-rings, silicone O-rings, EPDM O-rings, O…	– Versatile materials available to suit various applications – Ease of installation and replacement	– Insufficient information provided to list specific cons	o-ringsseals.com
Rubber O-Rings Manufacturers, Custom Bulk Sealing Rings Factory	Custom Rubber O-Rings, Rubber Seals, Nitrile Rubber Seals, Ethylene Propylene Rubber Seals, Neoprene Rubber Seals, Silicone Rubber O-Rings Seals, Vito…	– 30 years of experience – Custom made to customer needs – Advanced testing equipment ensures product quality – International standards compliant	– No cons explicitly mentioned in the provided text.	www.o-ringfactory.com

Frequently Asked Questions (FAQs)

What types of O-rings do Chinese O-ring factories produce?

You’ll find a wide variety of O-rings produced in Chinese factories, catering to diverse industrial needs. This includes standard O-rings in various materials like nitrile, silicone, and Viton, as well as specialized O-rings designed for high-temperature, high-pressure, or chemically aggressive environments. Many factories offer custom manufacturing to meet your specific requirements.

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

Thorough due diligence is key. Look for factories with certifications like ISO 9001, indicating a commitment to quality management systems. Request samples for testing to verify material properties and dimensional accuracy. Consider on-site audits or using a third-party inspection service to assess the factory’s manufacturing processes and quality control measures.

What are the typical lead times for O-ring orders from China?

Lead times vary depending on the order size, complexity, and the factory’s current workload. Smaller, simpler orders might be fulfilled within a few weeks, while larger or more specialized orders could take several months. It’s always best to discuss lead times directly with the factory during the initial stages of your order.

What are the common payment methods used when ordering from Chinese O-ring factories?

Several payment methods are typically accepted, including wire transfers, letters of credit, and sometimes escrow services. Wire transfers are often preferred for larger orders, while letters of credit offer more buyer protection. It’s crucial to clarify payment terms and methods with the factory before placing your order to avoid any misunderstandings.

How can I find reputable O-ring factories in China?

Online B2B platforms like Alibaba and Global Sources are good starting points. However, always conduct thorough research on potential suppliers, checking reviews and verifying their certifications. Attending industry trade shows can also provide opportunities to network and meet potential suppliers in person. Remember to compare quotes and thoroughly vet any factory before committing to a large order.