Are you looking for the best o-ring manufacturers in China to meet your specific needs? With numerous top-notch factories across the country, choosing the right one can be daunting. Let’s dive into a comparison of China’s leading o-ring manufacturers, highlighting their unique strengths, product offerings, and what sets them apart. Whether you’re in search of customized solutions, high-quality materials, or reliable delivery, this guide will help you make an informed decision.
Ring Size Conversion Chart – International – Après Jewelry
Product Details: The ring size conversion chart provides a comprehensive guide to convert ring sizes between different international standards, including US, UK, Germany, France, Japan, and others. It includes inner diameters in millimeters and corresponding ring sizes for each country. Users can measure their ring size at home using a strip of paper or thread and then refer to the chart for accurate sizing. The chart is useful for both men and women and covers a wide range of sizes.
Pros:
– Allows for accurate conversion between different international ring size standar…
– Includes inner diameters in millimeters for precise measurements.
– Can be used at home with simple tools like a strip of paper or thread.
– Covers a wide range of sizes for both men and women.
– Helpful for shopping from international jewelry stores.
Cons:
– Ring sizes can be affected by factors like finger shape, ambient temperature, an…
– Some ring styles or materials cannot be resized, making accurate sizing crucial.
– Multiple measurements may be necessary to account for minor variations in fit.
International Ring Size Conversion Chart: US, Australia, …
Product Details: The website likely provides tools and methods for measuring ring sizes. Common methods include using a ring sizer, a printable DIY ring size measuring kit, and the string method. A ring sizer is an adjustable tool that allows you to find your exact ring size by trying on different sizes. The printable DIY kit involves cutting out a ring size chart and wrapping it around your finger to measure. The string method involves wrapping a string around your finger, marking the overlap, and measuring the length to determine your ring size.
Pros:
– Accurate measurement: Using a ring sizer or the string method can provide precis…
– Convenience: Many websites offer printable ring size charts or the option to req…
– Variety of methods: Multiple methods are available to suit different preferences…
Cons:
– Potential for error: If the printable chart is not printed correctly or the stri…
– Limited availability: Some methods may require purchasing or requesting a ring s…
– Time of day and weather: Finger size can fluctuate due to temperature and other…
International Ring Size Conversion
Product Details: Larson Jewelers offers various tools and guides to help determine your US ring size. This includes a free printable ring sizer, a ring size chart with measurements in both millimeters and inches, and instructions on how to measure your finger or an existing ring. The ring size chart provides diameters and circumferences for different US ring sizes.
Pros:
– Accurate measurement using a free printable ring sizer or by measuring an existi…
– Comprehensive ring size chart with measurements in both millimeters and inches
– Guides on how to measure your finger at home
– Standardized US ring size system used across the US, Canada, and parts of Mexico
Cons:
– Slight variations in measurements can occur due to different jeweler tools and r…
– Ring width can affect the fit, requiring adjustments for comfort fit or wider ri…
– Measurements can vary between standard and comfort fit rings
International Ring Size Conversation
Product Details: My Love Wedding Ring offers a comprehensive international ring size chart to help customers determine their ring size according to their country’s standard. The jewelry is shown in US sizes, and the chart allows for conversion to corresponding US ring sizes for orders from outside the US or Canada. Customers can use the chart to measure their ring size using the diameter or circumference of the ring. Additionally, the website provides a free plastic ring sizer that can be mailed upon request, and a printable ring size guide is available for download.
Pros:
– Comprehensive international ring size chart for easy size conversion
– Free plastic ring sizer available upon request
– Printable ring size guide for at-home measurement
– Free ring resizing service within 60 days of shipping
– Lifetime resizing service with minimal or no cost depending on the metal and ini…
– High-quality materials and craftsmanship inspected by GIA Graduate Gemologists
– Free gift packaging and complimentary gift card included
– Insurance coverage for the package during transit
Cons:
– Some rings may not be resizable due to design and setting, such as eternity band…
– Resizing charges may apply for changes beyond 60 days or for certain metals and…
– Measurement accuracy depends on proper use of the printable guide or ring sizer
International Ring Size Conversion Chart for Comfort Fit
O-ring size (no tooling charge)
Product Details: Precision Polymer Engineering (PPE) offers a wide range of O-ring products, including AS 568, DIN 11864, and RJT O-rings. These O-rings are available in various sizes, materials, and cross-section dimensions. For example, AS 568 O-rings come in a range of internal diameters and cross-sections, while DIN 11864 O-rings are designed for pipe couplings with specific DN sizes and cross-sections. RJT O-rings are tailored for hygienic union connectors and are available in materials like EPDM, NBR, Silicone, FKM, and FFKM[1][2][4].
Pros:
– Fully molded O-rings offer tighter cross-section tolerances and no joint weaknes…
– Available in high-performance elastomer grades with certifications such as FDA,…
– Manufactured in cleanroom environments to minimize atmospheric contamination, su…
– Custom tooling available for non-standard sizes, providing cost-effective soluti…
Cons:
– Jointed O-rings, which are not fully molded, can have inherent weak spots at the…
– Spliced O-rings may have mismatched joints or wider tolerances on the cross-sect…
– Lower density jointed O-rings manufactured at lower pressures can have adverse e…
Ring Size Chart
Product Details: The size chart provided on the L’Dezen website pertains to their clothing line. It includes various sizes such as XXS, XS, S, M, L, and XL, corresponding to different measurements. For example, the XXS size corresponds to a US size 4, EU size 32, and body measurements of 30″ bust, 22.75″ waist, and 33″ hips. Similar measurements are provided for other sizes up to XL, which corresponds to a US size 14, EU size 42, and body measurements of 38″ bust, 30.75″ waist, and 40.75″ hips.[1]
Pros:
– Detailed size chart to ensure accurate fit
– 7-day return policy for easy exchanges or refunds[3]
Cons:
– Limited size range may not accommodate all body types
– No additional product details beyond size measurements are provided on the size…
French R O-Rings, AS 568A O-Rings, JIS …
Product Details: Revata Engineering offers French R series O-Rings as part of their extensive range of O-Ring products. These O-Rings are available in various materials including fluorocarbon, NBR, EPDM, and Silicone. They are designed for both static and dynamic sealing applications and come in standard, non-standard, and metric sizes. The materials used are high-quality and include proprietary compounds such as Viton®, Kalrez®, and Teflon®. O-Rings are selected based on chemical compatibility, service temperature, sealing pressure, and lubrication requirements.
Pros:
– Wide range of materials and sizes available
– High-quality and proprietary compounds
– Suitable for both static and dynamic sealing applications
– Available in standard, non-standard, and metric sizes
Cons:
– No specific details on French R series O-Rings available on the provided link
– May require additional inquiry for specific product details
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. The standard sizes follow the American AS568 series. These O-rings are made from various materials including Nitrile (NBR), Ethylene Propylene Diene Monomer (EPDM), Fluorinated Hydrocarbon (VITON), and more.
Pros:
– Wide range of sizes available to fit various applications.
– Made from diverse materials to suit different environmental and chemical require…
– Standard sizes conform to the AS568 series, ensuring compatibility and reliabili…
Cons:
– No specific information on the website regarding the durability or lifespan of t…
– No detailed technical specifications or tolerance ranges provided on the webpage…
O-Rings, Rubber Seals – Best China Manufacturer & Supplier
Product Details: Savvy manufactures a wide range of o-rings, including traditional standard o-rings, encapsulated o-rings, backup-rings, x-rings, and custom o-rings. The o-rings can be made from various materials such as rubber, metal, and other materials, with rubber being the most commonly used. Popular rubber compounds include NBR, FKM (Viton), and Silicone. Each material has specific properties and applications: 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 used in medical and food industries due to its non-toxic and high-temperature resistant properties. The hardness of
o-rings is measured in Shore A, typically ranging from 40 to 90, with 70 being generally more suitable. O-rings are available in various colors, and custom colors can be produced with a provided RAL or Pantone color number.
Pros:
– Wide range of materials and sizes available
– Fast delivery and low mold/tooling costs for custom o-rings
– Good chemical resistance and compatibility with various elements
– Suitable for different working conditions and industries
– Available in various colors for easy identification
– High-quality and cost-effective
Cons:
– Low hardness o-rings can be prone to peeling, installation damage, extrusion, an…
– High hardness o-rings can be inconvenient to install
– Custom colors may increase cost and require a larger MOQ with longer delivery ti…
Comparison Table
| Company | Product Details | Pros | Cons | Website |
|---|---|---|---|---|
| Ring Size Conversion Chart – International – Après Jewelry | The ring size conversion chart provides a comprehensive guide to convert ring sizes between different international standards, including US, UK, Germa… | – Allows for accurate conversion between different international ring size standar… – Includes inner diameters in millimeters for precise measuremen… | – Ring sizes can be affected by factors like finger shape, ambient temperature, an… – Some ring styles or materials cannot be resized, making accura… | www.apresjewelry.com |
| International Ring Size Conversion Chart: US, Australia, … | The website likely provides tools and methods for measuring ring sizes. Common methods include using a ring sizer, a printable DIY ring size measuring… | – Accurate measurement: Using a ring sizer or the string method can provide precis… – Convenience: Many websites offer printable ring size charts or… | – Potential for error: If the printable chart is not printed correctly or the stri… – Limited availability: Some methods may require purchasing or r… | www.betterthandiamond.com |
| International Ring Size Conversion | Larson Jewelers offers various tools and guides to help determine your US ring size. This includes a free printable ring sizer, a ring size chart with… | – Accurate measurement using a free printable ring sizer or by measuring an existi… – Comprehensive ring size chart with measurements in both millim… | – Slight variations in measurements can occur due to different jeweler tools and r… – Ring width can affect the fit, requiring adjustments for comfo… | www.larsonjewelers.com |
| International Ring Size Conversation | My Love Wedding Ring offers a comprehensive international ring size chart to help customers determine their ring size according to their country’s sta… | – Comprehensive international ring size chart for easy size conversion – Free plastic ring sizer available upon request – Printable ring size guide fo… | – Some rings may not be resizable due to design and setting, such as eternity band… – Resizing charges may apply for changes beyond 60 days or for c… | www.myloveweddingring.com |
| International Ring Size Conversion Chart for Comfort Fit | hanoverjewelers.com | |||
| O-ring size (no tooling charge) | Precision Polymer Engineering (PPE) offers a wide range of O-ring products, including AS 568, DIN 11864, and RJT O-rings. These O-rings are available… | – Fully molded O-rings offer tighter cross-section tolerances and no joint weaknes… – Available in high-performance elastomer grades with certificat… | – Jointed O-rings, which are not fully molded, can have inherent weak spots at the… – Spliced O-rings may have mismatched joints or wider tolerances… | www.prepol.com |
| Ring Size Chart | The size chart provided on the L’Dezen website pertains to their clothing line. It includes various sizes such as XXS, XS, S, M, L, and XL, correspond… | – Detailed size chart to ensure accurate fit – 7-day return policy for easy exchanges or refunds[3] | – Limited size range may not accommodate all body types – No additional product details beyond size measurements are provided on the size… | ldezen.com |
| French R O-Rings, AS 568A O-Rings, JIS … | Revata Engineering offers French R series O-Rings as part of their extensive range of O-Ring products. These O-Rings are available in various material… | – Wide range of materials and sizes available – High-quality and proprietary compounds – Suitable for both static and dynamic sealing applications – A… | – No specific details on French R series O-Rings available on the provided link – May require additional inquiry for specific product details | www.revataengineering.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. – Made from diverse materials to suit different environmental and chemical require… – S… | – No specific information on the website regarding the durability or lifespan of t… – No detailed technical specifications or tolerance ranges provi… | www.precise-rubber.com |
| O-Rings, Rubber Seals – Best China Manufacturer & Supplier | Savvy manufactures a wide range of o-rings, including traditional standard o-rings, encapsulated o-rings, backup-rings, x-rings, and custom o-rings. T… | – Wide range of materials and sizes available – Fast delivery and low mold/tooling costs for custom o-rings – Good chemical resistance and compatibili… | – Low hardness o-rings can be prone to peeling, installation damage, extrusion, an… – High hardness o-rings can be inconvenient to install – Custom… | savvyrubber.com |
Frequently Asked Questions (FAQs)
What are the common materials used by o-ring factories in China?
O-ring factories in China use a variety of materials to manufacture o-rings, including Nitrile (NBR), Ethylene Propylene Diene Monomer (EPDM), Fluorocarbon (FKM), Hydrogenated Nitrile Butadiene Rubber (HNBR), and Silicone. Each material has its own unique properties and is suited for different applications, such as high-temperature resistance, chemical compatibility, or specific industrial uses.
How do I specify the size of an o-ring when ordering from a Chinese factory?
When ordering o-rings from a Chinese factory, 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 + 2 * CS. For example, if the ID is 20 mm and the CS is 2 mm, the OD would be 24 mm. You can also refer to standard o-ring sizes like AS568, ISO 3601, or GB 3452.1.
What is the typical minimum order quantity (MOQ) for o-rings from Chinese manufacturers?
The minimum order quantity (MOQ) for o-rings from Chinese manufacturers can vary widely. Some factories may have a low MOQ of just 10-100 pieces, while others may require orders of 500-50,000 pieces. It depends on the specific factory and the type of o-ring you are ordering. Always check with the manufacturer for their specific MOQ requirements.
Can Chinese o-ring factories provide custom and OEM services?
Yes, many Chinese o-ring factories offer custom and OEM services. They can manufacture o-rings according to your specific drawings or samples. These factories often have advanced production methods such as compression molding, injection molding, and extrusion, allowing them to produce a wide range of customized o-rings with various materials and sizes.
What certifications and standards do Chinese o-ring manufacturers typically adhere to?
Chinese o-ring manufacturers often adhere to various international and local standards and certifications. These include ISO 9001 for quality management, ISO 13485 for medical devices, and IATF 16949 for the automotive industry. They also comply with standards like AS568, ISO 3601, and GB 3452.1 for o-ring sizes and materials. This ensures that the products meet high-quality and safety standards.