Are you struggling to find the perfect o-ring size for your project? When it comes to o-ring sizing charts, accuracy and variety are crucial. In this article, we’ll compare the top o-ring manufacturers in China, helping you navigate the complex world of o-ring sizes and materials with ease. Let’s dive in and find the best fit for your needs.

Metric O-Ring Size Chart

Product Details: The Metric O-Ring Size Chart on Marco Rubber & Plastics website provides a comprehensive list of common and non-standard metric o-ring sizes. The chart includes dimensions such as cross-section (CS), inner diameter (ID), and outer diameter (OD) in both inches and millimeters. Users can browse and order o-rings from the world’s largest inventory network, with thousands of metric o-rings available in stock. Custom o-rings can also be produced within a few weeks, typically without tooling fees. The website offers interactive search filters to find specific o-ring sizes and provides quotes usually within 60 minutes.

Pros:
– Comprehensive size chart including both standard and non-standard metric o-ring…
– Large inventory network with thousands of o-rings available in stock
– Custom o-rings can be produced within a few weeks without tooling fees
– Interactive search filters for easy size selection
– Quick quote response, usually within 60 minutes

Cons:
– No specific details on material compatibility or chemical resistance are provide…
– Users may need to navigate to other sections of the website for additional infor…

O-Ring Sizes – AS568 Standard

Product Details: The AS568 O-Ring standard, set by the Society of Automotive Engineers (SAE), specifies the sizes of O-Rings for general industrial and aerospace applications. It includes a comprehensive list of O-ring dimensions and tolerances, ensuring compatibility and interchangeability. Key dimensions include inside diameter (ID), cross-section (CS), and outside diameter (OD), with tolerances defined for each. The standard is updated periodically, with the latest version being AS568D. O-Rings are specified by their AS568 dash number, ID, and CS, and are available in various materials and hardness levels.

Pros:
– Ensures compatibility and interchangeability across different applications
– Comprehensive list of dimensions and tolerances for precise selection
– Available in a wide range of materials and hardness levels
– Widely used standard in both industrial and aerospace sectors

Cons:
– Requires precise measurement and selection to avoid incorrect sizing
– Material and hardness choices can be overwhelming for non-experts
– Tolerances must be carefully considered to avoid installation issues
– May not cover all specialized or custom o-ring requirements

danco o ring size chart Manufacturers and Factory China

Ring Size Conversion Chart – International – Après Jewelry

Product Details: The ring size conversion chart provides a comprehensive guide to convert ring sizes across different international standards, including US, UK, Germany, France, Japan, and others. It includes inner diameters in millimeters, corresponding ring sizes, and instructions on how to measure your ring size at home using a strip of paper or a ring sizer.

Pros:
– Allows for accurate conversion of ring sizes across various international standa…
– Includes detailed instructions on how to measure your ring size at home.
– Provides inner diameters in millimeters for precise measurements.
– Helpful for shopping for rings from stores in different countries.

Cons:
– Ring sizes can be affected by factors like finger shape, ambient temperature, an…
– Some ring styles, such as eternity bands or those made of certain materials like…
– Multiple measurements may be necessary to account for minor variations in fit.

O-ring size (no tooling charge)

Product Details: Precision Polymer Engineering offers a wide range of O-rings in various standards including AS 568, BS 1806, BS 4518, ISO 3601, and others. Their O-rings are available in sizes up to 2.5 metres (8ft) outer diameter and cross sections from 5mm (0.2″) to 20mm (0.79″). They are made from high-performance elastomer materials such as EPDM, NBR, Silicone, FKM, and FFKM, and are certified to FDA, USP, and 3-A standards. Custom tooling for non-standard sizes is also available[2][4][5].

Pros:
– Fully molded O-rings eliminate weak spots at the joint, reducing the risk of pre…
– Tighter cross-section tolerances ensure a proper fit in critical equipment[2].
– Superior accuracy and batch-to-batch consistency due to precise tooling[2].
– High-performance elastomer grades offer excellent chemical resistance, plasma re…
– Manufactured in cleanroom environments for low atmospheric contamination[2][4].
– Shortest lead-times in the sealing industry for time-critical requirements[2].

Cons:
– Jointed O-rings, though available, have inherent weak spots at the joints which…
– Spliced O-rings may have mismatched joints or wider tolerances on the cross sect…
– Lower density jointed O-rings can have adverse effects on compression set resist…

French R O-Rings, AS 568A O-Rings, JIS …

International Ring Size Conversion Chart: US, Australia, …

Product Details: Ring sizing tools and methods are designed to help individuals determine their accurate ring size. These include adjustable ring sizers, printable DIY ring size measuring kits, and string or tape measure methods. Ring sizes are typically measured in US sizes ranging from 3 to 15, with half and quarter sizes available. The size is linked to the diameter or circumference of the inside of the ring’s band.

Pros:
– Accurate measurement: Adjustable ring sizers and printable DIY kits provide prec…
– Convenience: Measuring at home eliminates the need to visit a jewelry store.
– Flexibility: Methods like string or tape measures and multi-ring sizers offer ea…
– Temporary adjustments: Options like sizing beads, spring inserts, and plastic ad…

Cons:
– Accuracy reliance: The accuracy of the measurement depends on the method used an…
– Limited adjustability: Some methods, like sizing beads, may not allow for large…
– Maintenance: Temporary adjustments like plastic adjusters need regular checks an…
– Professional involvement: Some adjustments, such as spring inserts, require an e…

Wholesale O-ring Size Chart – MELON

Product Details: O-ring size charts provide detailed dimensions for standard and metric o-rings. These charts typically include the internal diameter (ID), outside diameter (OD), and cross-sectional diameter (CS) measurements. The AS568 standard, defined by the Society of Automotive Engineers (SAE), lists 369 standard sizes used in the United States and for most military specifications. Metric sizes are defined by International Standard ISO 3601-1:2002 and are grouped into series for general and aerospace applications[2][4][5].

Pros:
– Provides precise measurements for accurate selection of o-rings.
– Includes both standard and metric sizes to cater to different regions and applic…
– Allows for easy calculation of OD and ID using formulas such as OD = 2(CS) + ID…
– Supports a wide range of cross-sectional diameters and inside diameters[2][4].

Cons:
– Requires careful measurement to ensure the correct size is selected.
– The vast number of sizes can be overwhelming for those not familiar with o-ring…
– Tolerances may vary, which can affect the fit and performance of the o-ring in c…

Metric o store ring chart – Kin by Rice n Roll

Product Details: Kin by Rice n Roll is a family-run restaurant located in Wauwatosa, known for its homemade, fresh, and tasty Asian food, particularly Thai and Japanese cuisine. The restaurant is part of the Rice n Roll Bistro family and is operated by passionate family members.

Pros:
– Varieties of Asian food and sushi with modernized look and authentic taste
– Passionate family members dedicated to homemade cooking
– Diverse elements in dishes like Ramen, developed over hours for optimal flavor

Cons:
– Reservations can only be made 24 hours prior, with no reservations on Friday and…
– Tables will be released if the party is more than 5 minutes late

ISO 3601 Metric O-Rings and The Size Chart – Savvy

Comparison Table

Frequently Asked Questions (FAQs)

How do I measure an o-ring to ensure the correct size?

When measuring an o-ring, you need to consider three key dimensions: the inner diameter (ID), the outer diameter (OD), and the cross-section (CS) or width. The OD can be calculated using the formula: OD = ID + 2 * CS. These measurements are crucial for selecting the right o-ring for your application to ensure proper sealing and performance.

What are the standard o-ring sizes available in China?

In China, o-ring sizes follow various international and local standards such as AS568 (USA), BS1516 (UK), DIN 3771 (Germany), JIS B 2401 (Japan), ISO 3601 (International), and GB 3452.1 (China). These standards specify different inner diameters and cross-sections, ensuring you can find the right size for your needs. For example, the AS568 standard includes 349 different sizes, each identified by a unique dash number.

Can I customize o-ring sizes and shapes if standard sizes do not fit my needs?

Yes, you can customize o-ring sizes and shapes. If the standard sizes do not meet your requirements, manufacturers in China can produce custom o-rings. You will need to provide the inner diameter and cross-section for simple customizations, or a detailed drawing for more complex shapes like square, rectangular, or irregular shapes. This process may involve more communication and cooperation but ensures you get the perfect fit for your application.

What materials are commonly used for o-rings in Chinese factories?

Chinese factories produce o-rings from a variety of materials, each with its own properties and applications. Common materials include NBR (nitrile), FKM (fluorocarbon), EPDM (ethylene propylene diene monomer), HNBR (hydrogenated nitrile), silicone, and FFKM (perfluoroether). Each material has different compatibility with chemicals, temperatures, and other environmental factors, so choosing the right material is crucial for the performance and longevity of the o-ring.

How do I choose the right hardness for my o-ring?

The hardness of an o-ring is measured in Shore A units and ranges from 30 to 90. For most applications, a hardness of 60-70 Shore A is suitable, as it balances ease of installation with durability. However, if the sealing pressure is high (e.g., 30-60 MPa), you may need an o-ring with a higher hardness (85-90 Shore A). Lower hardness o-rings are easier to install but may be prone to damage, while higher hardness o-rings are more durable but harder to install.