O-rings are essential components in various industries, providing reliable sealing solutions for countless applications. Understanding the O-ring dash number system is crucial for selecting the right O-ring for specific needs. This guide delves into the intricacies of O-ring dash numbers in China, offering insights into their significance and application.
Readers can expect to learn about the standardization of O-ring sizes, the importance of material selection, and how to interpret dash numbers effectively. Additionally, we will explore common applications and best practices for ensuring optimal performance. By the end of this guide, you will be equipped with the knowledge to make informed decisions regarding O-ring specifications.
Comprehensive Guide to O-Ring Dash Numbers in China
Introduction
O-rings are essential components in various industries, providing reliable sealing solutions for a wide range of applications. Understanding O-ring sizes, particularly the AS568 dash numbers, is crucial for selecting the right O-ring for your needs. This guide will delve into the intricacies of O-ring dash numbers, their technical features, and the differences between various types available in the market.
Technical Features of O-Rings
O-rings are characterized by their dimensions, which are defined by the AS568 standard. The key technical features include the inner diameter (ID), outer diameter (OD), and cross-section (CS). Below is a comparison table highlighting these features for selected AS568 O-ring sizes.
| AS568 Dash Code | ID (IN) | OD (IN) | CS (IN) | ID (MM) | OD (MM) | CS (MM) |
|---|---|---|---|---|---|---|
| 001 | 0.029 | 0.109 | 0.040 | 0.74 | 2.78 | 1.02 |
| 002 | 0.042 | 0.142 | 0.050 | 1.07 | 3.61 | 1.27 |
| 003 | 0.056 | 0.176 | 0.060 | 1.42 | 4.46 | 1.52 |
| 004 | 0.070 | 0.210 | 0.070 | 1.78 | 5.34 | 1.78 |
| 005 | 0.101 | 0.241 | 0.070 | 2.57 | 6.13 | 1.78 |
These dimensions are critical for ensuring a proper fit in their respective grooves, which directly affects the sealing performance.
Differences in Types of O-Rings
O-rings come in various materials and designs, each suited for specific applications. The following table outlines the differences between common types of O-rings.
| Type | Material | Temperature Range | Applications |
|---|---|---|---|
| Standard O-Ring | Buna-N | -20°F to 180°F | General sealing applications |
| High-Temperature O-Ring | Silicone | -60°F to 500°F | High-temperature environments |
| Chemical-Resistant O-Ring | Viton | -20°F to 400°F | Chemical processing industries |
| Low-Temperature O-Ring | Neoprene | -40°F to 200°F | Refrigeration and HVAC systems |
| FDA-Compliant O-Ring | EPDM | -20°F to 300°F | Food and pharmaceutical industries |
Each type of O-ring is designed to meet specific performance criteria, making it essential to choose the right one based on the application requirements.
Understanding O-Ring Dash Numbers
The AS568 dash number system is a standardized method for identifying O-ring sizes. Each dash number corresponds to specific dimensions, allowing for easy identification and selection. For instance, the dash number 213 indicates an O-ring with a specific ID and CS, making it easier for engineers and technicians to find the right fit.
Importance of AS568 Specifications
The AS568 specifications are widely recognized across industries, ensuring compatibility and interchangeability of O-rings. This standardization helps reduce costs and lead times associated with custom O-ring manufacturing, as many sizes are readily available from suppliers like mykin.com and orangeseal.us.
Conclusion
In summary, understanding O-ring dash numbers and their technical features is vital for selecting the appropriate sealing solution for various applications. The AS568 standard provides a reliable framework for identifying O-ring sizes, while the differences in materials and designs cater to specific industry needs. By leveraging this knowledge, engineers and technicians can ensure optimal performance and longevity of their sealing solutions.
FAQs
1. What is an O-ring dash number?
An O-ring dash number is a unique identifier that corresponds to specific dimensions of an O-ring, defined by the AS568 standard.
2. Why are AS568 specifications important?
AS568 specifications ensure compatibility and standardization across industries, allowing for easy identification and selection of O-rings.
3. What materials are commonly used for O-rings?
Common materials include Buna-N, silicone, Viton, neoprene, and EPDM, each suited for different applications and temperature ranges.
4. Where can I purchase O-rings?
O-rings can be purchased from various suppliers, including mykin.com, o-ring.info, and www.mscdirect.com.
5. How do I determine the right O-ring size for my application?
To determine the right O-ring size, refer to the AS568 size chart, which lists the dash numbers along with their corresponding dimensions.