Are you looking for the best o-ring dimension factories in China? With numerous options available, choosing the right one can be overwhelming. In this article, we’ll compare the top Chinese manufacturers, highlighting their strengths, product varieties, and what sets them apart. Let’s dive into the world of o-rings and find the perfect fit for your needs.
O-Rings | China – Products | Parker NA
Product Details: Parker O-rings are circular sealing elements with circular cross-sections, primarily used in static applications. They are available in various materials, including nitrile rubber (NBR), fluorocarbon (FKM, FPM), ethylene propylene rubber (EPDM), polychloroprene rubber (CR), hydrogenated nitrile (HNBR), and silicone (VMQ). Each material type is tailored for specific applications such as automotive, chemical processing, pharmaceutical, and general industrial uses. For example, FKM O-rings are excellent for oil & gas and dynamic applications due to their compatibility with oils, gases, hydraulic oil, and fuels. EPDM O-rings are focused on food & beverage, chemical processing, and pharmaceutical applications. HNBR O-rings offer good mechanical
robustness for automotive and heavy-duty applications.
Pros:
– Wide range of materials to suit various applications
– Excellent chemical and temperature resistance depending on the material
– Ease of service and installation
– No critical torque on tightening, reducing structural damage risk
– Cost-effective and lightweight
– Gradual failure mode, allowing for easy identification of wear
– High compatibility with different fluids and gases
Cons:
– Material compatibility issues with certain fluids and chemicals (e.g., NBR not c…
– Specific materials may have limitations in cold flexibility or high-temperature…
– Potential for extrusion in high-pressure applications without proper back-up rin…
– Some materials may have poor short-term rebound or electrical properties
O-Rings, Rubber Seals – Best China Manufacturer & …
Product Details: Savvy manufactures a wide range of o-rings made from various materials including NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, Aflas, and more. These o-rings are available in standard and custom sizes and shapes. The temperature range for these o-rings varies by material, with Silicone o-rings operating from -70°C to 220°C. The hardness of the o-rings is measured in Shore A, typically ranging from 40 to 90, with 60-70 being the most common. Savvy also offers o-rings in various colors and can produce them according to specific RAL or Pantone color numbers. The company provides fast delivery and competitive pricing due
to their large inventory and favorable courier rates.
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, particularly for Silicone o-rings.
– Good chemical compatibility with various elements.
– Fast delivery and competitive pricing.
– Custom o-ring production available at low mold/tooling costs.
Cons:
– Low hardness o-rings can be prone to peeling, installation damage, extrusion, an…
– High hardness o-rings can be inconvenient to install.
– Unique colors may increase cost and require a larger MOQ with longer delivery ti…
O-ring size (no tooling charge)
Product Details: Precision Polymer Engineering (PPE) offers a wide range of O-ring sizes and types, including AS 568, DIN 11864, and RJT O-rings. These O-rings are available in various materials such as FFKM, FKM, EPDM, and Silicone, with certifications including FDA, USP, and 3-A 18-03. The O-rings can be fully molded, ensuring tighter cross-section tolerances and no joint weaknesses. They are used in critical applications like compressors, valves, oil & gas equipment, and semiconductor manufacturing.
Pros:
– Fully molded O-rings eliminate joint weaknesses, reducing the risk of premature…
– Tighter cross-section tolerances ensure a proper fit in critical equipment.
– Available in high-performance elastomer grades with excellent chemical resistanc…
– Metal detectable elastomers are available for enhanced consumer safety.
– Manufactured in cleanroom environments to minimize contamination.
Cons:
– Jointed O-rings, though available, may have inherent weak spots at the joints.
– Spliced O-rings can have mismatched joints and wider tolerances on the cross sec…
– Lower density jointed O-rings may have reduced compression set resistance and li…
Rubber o-ring sizes
Product Details: Rubber O-rings are available in a wide range of sizes. The internal diameter (ID) can range from 0.5 mm to 2000.00 mm, and the cross-section (CS) diameter can range from 0.3 mm to 15.00 mm. These O-rings adhere to the American standard AS568 series, ensuring compatibility with various applications. The materials used include Nitrile (NBR), Ethylene Propylene Diene Monomer (EPDM), VITON, silicone, and PTFE (Teflon)[3].
Pros:
– Wide range of sizes available to fit various applications
– Adheres to American standard AS568 series for consistency and compatibility
– Multiple material options (NBR, EPDM, VITON, silicone, PTFE) to suit different n…
Cons:
– No specific information on the website regarding the pros and cons, so general p…
– Material limitations depending on the application (e.g., temperature, chemical r…
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, Silicone, EPDM, and others. 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 exhibit good elastic and resilient properties, and are resistant to high temperatures, abrasion, and oils. 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 materials
– Wide range of sizes available (ID: 0.8~572mm, Cross Section: 0.4~17.27mm)
– Good elastic and resilient properties
– High temperature resistance
– Abrasion and oil resistance
– No tooling costs due to over 1000 existing sizes
– Available in various commonly used materials (Silicone, Neoprene, Nitrile, EPDM,…
Cons:
– No specific cons mentioned, but the suitability of the O-ring may depend on the…
– Higher acrylonitrile content in NBR may be required for certain conditions, whic…
Custom O-Rings, Custom Molded O-Ring China Manufacturer
Product Details: Savvy Rubber offers custom o-rings designed and produced to meet specific requirements. These o-rings can be customized in various cross-sections and shapes. For standard cross-sections but non-round shapes (e.g., square, rectangular), a drawing is required for mold production. 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. The materials used include NBR, FKM (Viton), and Silicone, among others. The hardness of o-rings is measured in Shore A, typically ranging from 40 to 90, with 60-70 being common. Custom o-rings can
be produced in various colors, but unique colors may increase cost and delivery time.
Pros:
– Customizable to specific dimensions and shapes
– Wide range of materials available (NBR, FKM, Silicone, etc.)
– Suitable for various industries including hydraulics, aerospace, and medical equ…
– Strong cost control management resulting in competitive pricing
– Ability to produce o-rings in various colors
Cons:
– Higher price compared to standard o-rings due to lower volume production
– Potential increase in cost and delivery time for unique colors or complex design…
– Requires close communication and cooperation for custom designs without a provid…
China O-ring GB Standards English PDF List
French R O-Rings, AS 568A O-Rings, JIS …
Product Details: Revata Engineering offers a wide range of O-rings in various materials including fluorocarbon, NBR, EPDM, and Silicone. They provide O-rings in standard, non-standard, and metric sizes, with sizes ranging from 0.5mm to large diameters. The O-rings are available in different compounds such as Viton®, Kalrez®, Teflon®, and other special formulated compounds for unique applications.
Pros:
– Wide range of materials and sizes available
– High-quality and proprietary compounds
– Suitable for various industries including oil & gas, marine, and medical
– Custom O-ring options available
Cons:
– No specific details on French R-series O-rings due to the unavailability of the…
– May require additional inquiry for specific size and material details
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, including organic and inorganic acids, alkali, ester, ether, ketone, aldehyde, superheated water, and steam. The maximum operating temperature is 230 °C (446 °F). These O-rings can be manufactured into various forms such as O-rings, diaphragms, gaskets, rubber strips, and rubber plates. They are ideal for harsh chemical environments and are used in industries like semiconductor, petrochemical, mechanical seal, instrumentation, energy, biopharmaceutical, food, and medical sectors.
Pros:
– Highest temperature resistance up to 620 °F (446 °C)
– Excellent chemical resistance to a wide range of aggressive chemicals
– High thermal, oxidative, and chemical stability
– Long service life and reliability in demanding applications
– Suitable for use in critical industries such as chemical processing, aerospace,…
– Low off-gassing and extractable levels
Cons:
– Poor low temperature performance
– Significantly more costly than standard FKM materials
– Lower tensile strength compared to some other elastomers
Ring Size Guide
Product Details: The ring size guide provides various methods to determine your ring size, including using an existing ring, a string or paper, or a printable ring sizer. It includes international ring size conversion charts for USA, UK, Australia, Germany, France, Japan, and other countries. The guide also offers tips on measuring your finger accurately, such as measuring when your fingers are warm and choosing the larger size if your measurement falls between two sizes.
Pros:
– Provides multiple methods for determining ring size
– Includes international ring size conversion charts
– Offers printable ring sizer for accurate measurements
– Provides tips for accurate finger measurement
Cons:
– Requires physical measurement or existing ring for accuracy
– May need to visit a jeweler for precise sizing
– Different ring designs can have slightly different fits
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| O-Rings | China – Products | Parker NA | Parker O-rings are circular sealing elements with circular cross-sections, primarily used in static applications. They are available in various materi… | – Wide range of materials to suit various applications – Excellent chemical and temperature resistance depending on the material – Ease of service and… |
| O-Rings, Rubber Seals – Best China Manufacturer & … | Savvy manufactures a wide range of o-rings made from various materials including NBR, FKM (Viton), Silicone, EPDM, HNBR, CR, Aflas, and more. These o-… | – 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 |
| O-ring size (no tooling charge) | Precision Polymer Engineering (PPE) offers a wide range of O-ring sizes and types, including AS 568, DIN 11864, and RJT O-rings. These O-rings are ava… | – Fully molded O-rings eliminate joint weaknesses, reducing the risk of premature… – Tighter cross-section tolerances ensure a proper fit in critica… | – Jointed O-rings, though available, may have inherent weak spots at the joints. – Spliced O-rings can have mismatched joints and wider tolerances on… | www.prepol.com |
| Rubber o-ring sizes | Rubber O-rings are available in a wide range of sizes. The internal diameter (ID) can range from 0.5 mm to 2000.00 mm, and the cross-section (CS) diam… | – Wide range of sizes available to fit various applications – Adheres to American standard AS568 series for consistency and compatibility – Multiple m… | – No specific information on the website regarding the pros and cons, so general p… – Material limitations depending on the application (e.g., tempe… | www.precise-rubber.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, Silicone, EPDM, a… | – Made from high-quality, durable rubber materials – Wide range of sizes available (ID: 0.8~572mm, Cross Section: 0.4~17.27mm) – Good elastic and resi… | – No specific cons mentioned, but the suitability of the O-ring may depend on the… – Higher acrylonitrile content in NBR may be required for certain… | www.melon-rubber.com |
| Custom O-Rings, Custom Molded O-Ring China Manufacturer | Savvy Rubber offers custom o-rings designed and produced to meet specific requirements. These o-rings can be customized in various cross-sections and… | – Customizable to specific dimensions and shapes – Wide range of materials available (NBR, FKM, Silicone, etc.) – Suitable for various industries incl… | – Higher price compared to standard o-rings due to lower volume production – Potential increase in cost and delivery time for unique colors or complex… | savvyrubber.com |
| China O-ring GB Standards English PDF List | www.gbstandards.org | |||
| French R O-Rings, AS 568A O-Rings, JIS … | Revata Engineering offers a wide range of O-rings in various materials including fluorocarbon, NBR, EPDM, and Silicone. They provide O-rings in standa… | – Wide range of materials and sizes available – High-quality and proprietary compounds – Suitable for various industries including oil & gas, marine,… | – No specific details on French R-series O-rings due to the unavailability of the… – May require additional inquiry for specific size and material d… | www.revataengineering.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 up to 620 °F (446 °C) – Excellent chemical resistance to a wide range of aggressive chemicals – High thermal, oxidati… | – Poor low temperature performance – Significantly more costly than standard FKM materials – Lower tensile strength compared to some other elastomers | www.jst-seals.com |
| Ring Size Guide | The ring size guide provides various methods to determine your ring size, including using an existing ring, a string or paper, or a printable ring siz… | – Provides multiple methods for determining ring size – Includes international ring size conversion charts – Offers printable ring sizer for accurate… | – Requires physical measurement or existing ring for accuracy – May need to visit a jeweler for precise sizing – Different ring designs can have sligh… | orochinajewelry.com |
Frequently Asked Questions (FAQs)
What are the key dimensions to specify when ordering o-rings from Chinese factories?
When ordering o-rings, you need to specify the inside diameter (ID), outside diameter (OD), and the cross-section (CS) or width. The outside diameter can be calculated using the formula: OD = ID + CS * 2. Providing these dimensions ensures you get the correct size for your application.
What materials are commonly used for o-rings in Chinese factories?
Chinese o-ring factories often use a variety of materials, including Nitrile (NBR), Fluorinated Rubber (FKM), Ethylene Propylene Diene Monomer (EPDM), Silicone (VMQ), and Hydrogenated Nitrile Butadiene Rubber (HNBR). Each material has its own properties and is suited for different applications, such as high temperature, chemical resistance, or wear resistance.
Can Chinese o-ring factories produce custom sizes and shapes?
Yes, many Chinese o-ring factories offer customization options. They can produce o-rings in various sizes and shapes based on your specific requirements or drawings. This includes non-standard sizes, encapsulated o-rings, backup-rings, x-rings, and more, often with low mold/tooling costs and fast delivery times.
What is the typical hardness range for o-rings produced in Chinese factories?
The hardness of o-rings is usually measured in Shore A units and ranges from 30 to 90. For most applications, a hardness of 60-70 Shore A is commonly used, as it balances ease of installation with durability. However, the choice of hardness depends on the specific application and the sealing pressure involved.
What is the minimum order quantity (MOQ) for o-rings from Chinese factories?
The minimum order quantity (MOQ) for o-rings can vary but is typically around 100 to 1000 pieces, depending on the factory and the specific type of o-ring. Some factories may offer lower MOQs for standard sizes, while custom or non-standard sizes might require a higher minimum order quantity.