Are you looking for the best o-ring manufacturers in China to meet your specific needs? With numerous options available, choosing the right one can be overwhelming. In this article, we’ll compare the top o-ring factories in China, highlighting their key features, materials, and services to help you make an informed decision. Let’s dive in and find the perfect fit for your project.

Rubber o-ring sizes

Product Details: Rubber O-rings are available in a wide range of sizes. The internal diameter (ID) ranges from 0.5 mm to 2000.00 mm, and the cross-sectional diameter (CS) ranges from 0.3 mm to 15.00 mm. The products adhere to the American standard AS568 series, which is one of the most commonly used standards in the industry.

Pros:
– Wide range of sizes available to fit various applications.
– Compliance with the American standard AS568 series ensures consistency and relia…
– Large size options up to 2000.00 mm ID and 15.00 mm CS cater to diverse needs.

Cons:
– No specific information on material options or chemical compatibility is provide…
– The page does not offer detailed technical specifications or tolerances for each…

Ring Size Conversion Chart – International – Après Jewelry

Product Details: The International Ring Size Conversion Chart provided by Apres Jewelry is a comprehensive resource for determining ring sizes across various international standards. It includes conversions for USA/Canada/Mexico, UK/Ireland/Australia/New Zealand/South Africa, Germany/France, and other countries. The chart lists the inside diameter in millimeters and inches, corresponding to different ring sizes in each region. For example, a 15 mm inside diameter corresponds to a size 4 in the USA and a size H in the UK. The chart covers a wide range of sizes, from 15 mm to 74.8 mm, and their equivalent ring sizes in different countries.

Pros:
– Comprehensive conversion chart covering multiple international ring size standar…
– Detailed measurements in both millimeters and inches.
– Helpful for accurate sizing when purchasing rings online from different regions.

Cons:
– Does not provide instructions on how to measure ring size if the user does not a…
– No additional tools or ring sizers are included with the chart itself, though th…

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

Product Details: French R O-Rings are measured by their inside diameter (ID) and cross-section width (C.S.) dimensions, given in millimeters. The series includes a wide range of sizes, from O-Ring R000 with an ID of 1.15 mm and C.S. of 0.13 mm to O-Ring R75 with larger dimensions. These O-Rings are used in various industrial applications where a compact design is required for a good sealing effect. They are available in different sizes to fit various housing dimensions, ensuring a precise fit for different applications.

Pros:
– Wide range of sizes available to fit different housing dimensions.
– Compact design suitable for various industrial applications.
– Precise measurements ensure a good sealing effect.
– Easy to use in both static and dynamic applications.

Cons:
– No specific information on the durability or lifespan of the O-Rings.
– No details provided on the cost or pricing of the French R O-Rings.
– May require careful selection of the right size to ensure proper fit and functio…

International Ring Size Conversion Chart: US, Australia, …

Product Details: To measure your ring size, you can use several methods. The most accurate way is with an adjustable ring sizer, which can be purchased online or requested from a jewelry website. This sizer allows you to try on different sizes to find the one that fits best. Another method is the string or tape measure technique, where you wrap a string around your finger, mark the overlap, and measure the length to match it with a ring size chart. You can also use a printable ring size chart and place an existing ring on it to find the matching size[1][3][5].

Pros:
– Accurate measurement with adjustable ring sizers
– Convenient methods such as using a string or existing ring
– Printable ring size charts available for easy reference
– Options for temporary size adjustments like sizing beads and spring inserts

Cons:
– Measurements can vary depending on the time of day and weather
– Cutting or soldering the ring for resizing can compromise its integrity
– Temporary size adjusters like plastic coils may need frequent replacement
– Some methods require careful precision to avoid inaccurate measurements

O-ring size (no tooling charge)

Custom O-Rings, Custom Molded O-Ring China Manufacturer

Product Details: Savvy offers custom o-rings designed and produced in various cross-sections and shapes. These o-rings are necessary when standard o-ring sizes are not available. Key details include the need for inner diameter (ID) and cross-section (CS) for round custom o-rings, and a detailed drawing for non-round shapes like square, rectangular, or irregular shapes. The production involves making a mold based on the provided specifications. 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. Materials include NBR, FKM, Silicone, EPDM, HNBR, CR,

and Aflas, with hardness ranging from Shore A 40 to 90. Colors can be customized using standard RAL or Pantone color numbers.

Pros:
– Strong cost control management resulting in low prices while maintaining high qu…
– Ability to design and produce custom o-rings in various sizes, materials, and sh…
– Wide range of applications across multiple industries.
– Customization options for color, material, and hardness.
– Fast delivery and low mold/tooling costs.

Cons:
– Higher price compared to standard o-rings due to the unconventional nature and l…
– Requires detailed communication and cooperation for non-standard shapes, which c…
– Unique colors may increase cost and require a larger minimum order quantity (MOQ…

China O Rings Manufacturers and Suppliers

Metric o store ring chart – Kin by Rice n Roll

Product Details: Kin by Rice n Roll is a small, family-run restaurant located in the Wauwatosa neighborhood. It is part of the Rice n Roll Bistro family and is known for serving a variety of Asian food and sushi with a modernized look and authentic taste from across Asia, especially Thailand and Japan.

Pros:
– Family-run restaurant with a passion for homemade, fresh, and tasty food.
– Variety of Asian dishes and sushi with modern and authentic flavors.
– Operated by family members of Rice n Roll Bistro.

Cons:
– No specific cons mentioned on the website.

Parker AS568 O-Rings Size Chart

Product Details: Parker O-rings are precision-engineered seals available in a wide range of materials and sizes. They are manufactured to exacting standards, ensuring superior product performance and process repeatability. Materials include Fluorocarbon (FKM), Fluorosilicone (FVMQ), Hydrogenated Nitrile (HNBR), Perfluoroelastomer (FFKM), Polyacrylate (ACM), and others. These O-rings are designed to meet various industry standards such as NSF, UL, Military (MIL-SPEC), Aerospace (AMS), NASA, FDA, and USDA. They are used in diverse applications including automotive, fluid power, semiconductor processing, and general industrial uses.

Pros:
– High reliability and durability
– Wide range of materials to suit different environmental demands
– Excellent chemical and temperature resistance
– Ease of service and maintenance
– Cost-effective
– Compact design requiring minimal space
– Gradual failure mode for easy identification

Cons:
– Material selection can be complex and requires careful consideration
– Some materials may have poor short-term rebound or low permeability
– Certain materials may not be suitable for all types of fluids or gases
– High-pressure applications may require additional support like back-up rings

30-80 Durometer colored elastic large diameter o-rings

Product Details: The 30-80 Durometer colored elastic large diameter O-rings are manufactured by Melon Rubber&Plastics in China. These O-rings are made from high-quality materials such as Nitrile rubber (NBR), Viton, and Silicone. They 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. The O-rings exhibit good elastic and resilient properties, and they are resistant to high temperatures, abrasion, and oil. They are suitable for various applications, including excavators, and come in over 1000 existing sizes, eliminating tooling costs.

Pros:
– Made from high-quality, durable rubber materials (NBR, Viton, Silicone).
– Wide range of sizes available (ID: 0.8~572mm, Cross Section: 0.4~17.27mm).
– High temperature resistance, abrasion resistance, and oil resistance.
– Over 1000 existing sizes, avoiding tooling costs.
– Good elastic and resilient properties.
– Suitable for various applications including excavators.

Cons:
– No specific cons mentioned, but the suitability of the material depends on the s…

Comparison Table

Frequently Asked Questions (FAQs)

Frequently Asked Questions About O-Ring Sizes in MM from Chinese Factories

What are the standard sizes for o-rings available in Chinese factories?

Chinese factories offer a wide range of standard o-ring sizes, including those that conform to international standards such as AS568, BS1516, DIN 3771, JIS B 2401, ISO 3601, and GB 3452.1. These standards cover various cross-sections and inside diameters, ensuring you can find the right size for your needs. For example, common cross-sections include 1.78mm, 2.62mm, 3.53mm, and more.

Can I customize the size of o-rings if standard sizes do not fit my requirements?

Yes, you can definitely customize the size of o-rings. Chinese manufacturers like Savvy and Hongju Silicone offer custom o-ring services where you can specify the inner diameter (ID) and cross-section (CS) according to your needs. Even if the cross-section is within standard ranges but the shape is not round, you can still get custom o-rings made to your specifications.

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

Chinese factories use a variety of materials for o-rings, including NBR (Nitrile), FKM (Viton), EPDM, Silicone, FFKM, HNBR, CR (Neoprene), and SBR. Each material has its own properties and is suited for different applications, such as high temperature, chemical resistance, or general mechanical use.

How do I determine the correct size of an o-ring for my application?

To determine the correct size of an o-ring, you need to know the inside diameter (ID) and the cross-section (CS). The outside diameter (OD) can be calculated using the formula: OD = ID + CS * 2. This ensures the o-ring fits perfectly in your application. You can also refer to the standard size charts provided by the manufacturers.

What is the typical hardness range for o-rings, and why is it important?

The hardness of o-rings is typically measured in Shore A units and ranges from 40 to 90. For most applications, a hardness of 70 is commonly used, as it balances ease of installation with durability. Lower hardness makes installation easier but may lead to issues like peeling or extrusion, while higher hardness can make installation more difficult but provides better sealing performance.