Ever wondered which Chinese O-ring factory offers the best quality and price? Choosing the right supplier is crucial for your business, impacting everything from product quality to your bottom line. Knowing the top contenders can save you time, money, and headaches by ensuring reliable sourcing and superior components. Ready to discover the best O-ring factories in China? Then let’s dive into our comparison!

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

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
– resistance to petroleum and other chemicals
– high-temperature, ultra-low-temperature, highly corrosive

Application Scenarios:
– high-tech equipment
– construction industry
– automotive industry
– aerospace industry
– medical equipment
– military
– chemical industry
– valves
– pipelines
– bearings
– automobiles
– 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 to determine cons

O-Rings, Rubber Seals – Best China Manufacturer & Supplier – Savvy

Product Details: O-rings are circular cross-section rubber sealing rings used to seal various fluids (air, water, oil). Savvy Rubber manufactures standard and custom o-rings in various materials, including NBR, FKM, Silicone, EPDM, HNBR, CR, Aflas, PTFE, Nylon, and PU. They offer encapsulated o-rings, backup rings, and x-rings. Sizes are specified by ID, OD, and CS, following various international standards (AS568, BS1516, DIN 3771, JIS B 2401, ISO 3601, GB 3452.1). Hardness is measured in Shore A (40-90). Colors are customizable, but standard colors are recommended for cost-effectiveness.

Technical Parameters:
– ID (Inside Diameter), OD (Outside Diameter), CS (Cross-section/Width), Shore A H…
– Temperature Range varies by material (e.g., NBR: -40°C to 120°C, FKM: -20°C to 2…

Application Scenarios:
– Hydraulic and pneumatic transmission systems
– Static and dynamic sealing in various equipment and industries (medical, food, a…

Pros:
– Simple structure, small size, compact installation
– Self-sealing effect, low cost, wide application

Cons:
– Large starting friction resistance in compression sealing
– Prone to damage (cutting, twisting, breaking) if improperly used

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
– Wide selection of stock items at wholesale prices
– Fast turnaround
– Customizable designs and materials
– Cost-effective

Cons:
– Generic placeholder
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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, rubber seals, rubber dampers, molded rubber parts, rubber extrusions. Custom-made products are a large percentage of their business, with 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:
– More than 20 years of experience
– Wide range of rubber products
– Custom solutions
– Reliable Quality, Reasonable Price and Remarkable Service

Cons:
– None explicitly stated in the provided text

Custom Rubber Seals & O-rings Manufacturer | Haisun Rubber

Product Details: Custom rubber seals and O-rings, including 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 seal tolerance up to 0.02 mm

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

Pros:
– IATF16949 certified factory
– ISO Class-100,000 clean rooms for assembly and relubrication

Cons:
– Generic placeholder
– Generic placeholder

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

Product Details: O-rings are circular cross-section sealants preventing leakage of liquids or gases in static and dynamic applications. Common materials include nitrile rubber (NBR), silicone, EPDM rubber, and fluorocarbon (Viton). Various types exist, including standard, encapsulated, backup rings, X-rings, and quad-rings, each suited for different applications. Customization in size, shape, and material is available.

Technical Parameters:
– Material (NBR, FKM, EPDM, silicone)
– Temperature Range (-40°C to 200°C, varies by material)
– Hardness (Shore A, 60-90)
– Color (varies)
– Pressure Resistance (varies by material and design)
– Inside Diameter (ID)
– Cross-section (CS)
– Outside Diameter (OD)

Application Scenarios:
– Automotive
– Aerospace
– Medical
– General industrial

Pros:
– Cost efficiency (sourcing from China)
– Access to advanced technology (China)
– Quick delivery (some suppliers)
– Low tooling costs (some suppliers)
– Customization options

Cons:
– Generic placeholder
– Generic placeholder

Top 10 Silicone O-Ring Manufacturers and Suppliers in China(2024)

Product Details: Silicone O-Rings, Rubber O-Rings, Viton O-Rings, Food Grade O-Rings, Gasket and Seals, Custom O-Rings & Seals, EPDM O-Rings, X-Rings, Square Rings, Silicone Rings, O-Ring Cord, Back-Up Ring, Encapsulated O-Ring, Y-Rings, Nitrile Rubber Rings, Pneumatic Seals, O-Ring Kits, O-Ring Seals, Hydraulic Seals, Sealing O-Ring, Oil Seal, FKM O-Rings, Buna-N O-Rings, V-Seals, Viton O-Ring, PTFE O-Ring, EPDM O-Ring, O-Ring Kit, Nitrile O-Ring, Neoprene O Ring, Metric O rings, Custom Silicone & Rubber Parts, Molded Plastic Parts, Quad Rings, V-Rings, O-Ring Seals, Basic Seals, Rubber Gaskets & Washers, O-Ring Cord, Oil Seal, Rubber Molded Parts

Technical Parameters:
– inner diameter
– outside diameter
– cross-sectional diameter
– various sizes (standard and metric)
– mil-spec and non-standard

Application Scenarios:
– outdoor applications
– high temperature
– high pressure
– static and dynamic applications
– various industries

Pros:
– fast delivery
– low MOQ
– customization capabilities
– ISO 9001 certified
– modern equipment
– extensive product catalog
– after-sales service
– technical support
– high-quality O-rings
– experienced
– competitive price
– excellent service
– non-toxic products
– FDA & SGS certified
– skilled team
– quality service
– extensive knowledge
– modern factory
– latest technology
– great service
– affordable
– fast production
– full range of materials
– variety in raw materials
– internationally authorized certifications
– cost-effective production
– high-profit margin

Cons:
– insufficient information to list cons

O-Ring Supplier – Order High Performance & Custom O-Rings Fast

Product Details: O-rings made from a wide variety of materials, including Buna-N (NBR) nitrile, in various colors, hardnesses (Shore A), and sizes. Customizable options are available, including medical grade, FDA compliant, EMI shielding, and others.

Technical Parameters:
– Hardness (Shore A)
– High Temp (°F/°C)
– Low Temp (°F/°C)
– Compression Set
– Chemical & Solvents Resistance
– Sunlight, Ozone, UV Resistance
– Wear Abrasion Resistance
– Permeation Vacuum Resistance
– Petroleum Oils & Hydraulics Resistance
– Fuels & Gas Resistance
– Brake Fluids Resistance

Application Scenarios:
– Internal Pressure
– Internal Vacuum
– Dynamic Rod and Piston
– Static Rod and Piston
– Food contact
– Medical uses
– Oil and gas
– Aerospace
– Drinking water
– Food and beverage
– Pharmaceutical
– Medical device manufacturing
– Semiconductor
– Nuclear
– High temperature applications
– High pressure applications

Pros:
– Availability in materials that withstand a wide range of pressure, temperature,…
– Availability in an array of colors, sizes, etc. and are very customizable
– Does not require critical torque on tightening
– Very lightweight
– Often a cost-effective sealing solution
– Long lifespans with correct application

Cons:
– Improperly sized o-rings are a leading cause of seal failure
– Custom o-rings can present additional costs upfront (though Marco Rubber often m…
– Material performance highly dependent on application conditions; testing in actu…

Marco Rubber & Plastics – Sealing Products & Solutions

Product Details: O-rings, seals, gaskets, custom molded seals, spring-energized seals, glide rings, backup rings, Markez® FFKM compounds, 3,000+ materials including Kalrez, Viton, Parker, Buna-N, Aflas, HNBR, Silicon, Teflon, etc.

Technical Parameters:
– size
– material
– durometer
– performance requirements

Application Scenarios:
– Semiconductor
– Solar
– LCD
– Food
– Water
– Life Sciences
– Aerospace
– Military
– Oil & Gas Refining & Exploration
– Chemical Handling & Processing
– Electronics – EMI Shielding

Pros:
– Unmatched value and top-of-the-line performance
– Largest inventory of specialty and standard sealing solutions
– Exceptional service and fast response
– Customizable solutions
– Expert engineering support
– ISO 9001:2015 Certified

Cons:
– Generic placeholder
– Generic placeholder

O Rings Manufacturer | O Rings Supplier – Hongjie Rubber Seal

Product Details: Wholesale O-rings in bulk. Custom options available: design, color, packaging, logo. Various international O-Ring standards; most sizes are already tooled. Made from various materials including NBR, FKM, Fluorosilicone, HNBR, Silicone, and Viton.

Technical Parameters:
– Various international O-Ring standards
– Specific material compounds to meet market needs

Application Scenarios:
– Automotive
– Aerospace
– Home Appliance
– Hydraulic & Pneumatic
– Oil & Gas
– Sewage Treatment
– Water & Food

Pros:
– One-stop O-rings OEM/ODM solution
– Affordable factory direct price

Cons:
– None explicitly stated in the provided text

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Comparison Table

Company	Product Details	Pros	Cons	Website
Top 10 O-ring Manufacturers and Suppliers in China (2024)	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 to determine cons	hongjusilicone.com
O-Rings, Rubber Seals – Best China Manufacturer & Supplier – Savvy	O-rings are circular cross-section rubber sealing rings used to seal various fluids (air, water, oil). Savvy Rubber manufactures standard and custom o…	– Simple structure, small size, compact installation – Self-sealing effect, low cost, wide application	– Large starting friction resistance in compression sealing – Prone to damage (cutting, twisting, breaking) if improperly used	savvyrubber.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 – Wide selection of stock items at wholesale prices – Fast turnaround – Customizable designs and materials – Cost…	– 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, rubb…	– More than 20 years of experience – Wide range of rubber products – Custom solutions – Reliable Quality, Reasonable Price and Remarkable Service	– None explicitly stated in the provided text	www.qlrubber.com
Custom Rubber Seals & O-rings Manufacturer	Haisun Rubber	Custom rubber seals and O-rings, including NBR, HNBR, VMQ, FKM, EPDM, ACM, and CR O-rings; oil seals; rubber x-rings; rubber gaskets; rubber grommets;…	– IATF16949 certified factory – ISO Class-100,000 clean rooms for assembly and relubrication	– Generic placeholder – Generic placeholder
Top 10 O-Ring Manufacturers and Suppliers in China (2024)	O-rings are circular cross-section sealants preventing leakage of liquids or gases in static and dynamic applications. Common materials include nitri…	– Cost efficiency (sourcing from China) – Access to advanced technology (China) – Quick delivery (some suppliers) – Low tooling costs (some suppliers)…	– Generic placeholder – Generic placeholder	www.rubber-tools.com
Top 10 Silicone O-Ring Manufacturers and Suppliers in China(2024)	Silicone O-Rings, Rubber O-Rings, Viton O-Rings, Food Grade O-Rings, Gasket and Seals, Custom O-Rings & Seals, EPDM O-Rings, X-Rings, Square Rings, Si…	– fast delivery – low MOQ – customization capabilities – ISO 9001 certified – modern equipment – extensive product catalog – after-sales service – tec…	– insufficient information to list cons	hongjusilicone.com
O-Ring Supplier – Order High Performance & Custom O-Rings Fast	O-rings made from a wide variety of materials, including Buna-N (NBR) nitrile, in various colors, hardnesses (Shore A), and sizes. Customizable optio…	– Availability in materials that withstand a wide range of pressure, temperature,… – Availability in an array of colors, sizes, etc. and are very cu…	– Improperly sized o-rings are a leading cause of seal failure – Custom o-rings can present additional costs upfront (though Marco Rubber often m… -…	www.marcorubber.com
Marco Rubber & Plastics – Sealing Products & Solutions	O-rings, seals, gaskets, custom molded seals, spring-energized seals, glide rings, backup rings, Markez® FFKM compounds, 3,000+ materials including K…	– Unmatched value and top-of-the-line performance – Largest inventory of specialty and standard sealing solutions – Exceptional service and fast respo…	– Generic placeholder – Generic placeholder	www.marcorubber.com
O Rings Manufacturer	O Rings Supplier – Hongjie Rubber Seal	Wholesale O-rings in bulk. Custom options available: design, color, packaging, logo. Various international O-Ring standards; most sizes are already t…	– One-stop O-rings OEM/ODM solution – Affordable factory direct price	– None explicitly stated in the provided text

Frequently Asked Questions (FAQs)

1. What types of O-rings do Chinese factories produce?

You’ll find a vast range of O-rings from Chinese factories, covering various materials like rubber (nitrile, silicone, EPDM, etc.), plastic, and even specialized compounds for extreme temperature or chemical resistance. They cater to a wide array of industries, from automotive and aerospace to medical and food processing, so you’re likely to find what you need.

2. How can I ensure quality control when sourcing from China?

Thorough due diligence is key! Request samples for testing before placing large orders. Clearly specify your quality standards and tolerances in your requests for quotes (RFQs). Consider using a third-party inspection service to verify quality at the factory before shipment. Building a strong relationship with a reputable supplier is also crucial.

3. 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 orders might be fulfilled within a few weeks, while larger, more customized orders can take several months. Always clarify lead times upfront during your negotiations.

4. What are the common payment methods used with Chinese O-ring factories?

Typical payment methods include wire transfers (TT), Letters of Credit (LC), and sometimes escrow services. Larger orders often require a deposit upfront, with the balance due upon inspection or delivery. Always discuss payment terms and conditions clearly with your supplier before finalizing any agreement.

5. Are there any certifications I should look for in a Chinese O-ring factory?

Look for certifications like ISO 9001 (quality management), IATF 16949 (automotive quality), or industry-specific certifications relevant to your application. These certifications demonstrate a commitment to quality standards and regulatory compliance. However, always verify the authenticity of these certifications.