How to Use the AS568 O Ring Chart?

How to Use the AS568 O Ring Chart?

1. What is the AS568 O Ring Chart?

The AS568 O Ring Chart is a standardized reference that provides dimensions for O rings. These rings are circular seals used to prevent the leakage of fluids or gases in various applications, such as machinery and automotive systems. The chart includes measurements like inner diameter, outer diameter, and thickness for a wide range of O ring sizes.

2. Where can I find the AS568 O Ring Chart?

You can find the AS568 O Ring Chart from various sources, including manufacturers' websites, engineering handbooks, and industry standards organizations. Many suppliers also provide this chart as part of their product catalog or technical documentation.

3. How do I read the AS568 O Ring Chart?

Reading the AS568 O Ring Chart is straightforward. Each size is listed with a unique designation (e.g., AS568-001). The chart typically shows three key dimensions: inner diameter (ID), outer diameter (OD), and cross-sectional diameter (CS). Follow these steps:

1. Locate the O ring size you need by finding its designation.
2. Take note of the inner diameter and outer diameter measurements.
3. Check the cross-sectional diameter for proper sizing, which can affect how well the O ring fits in its groove.

4. How do I choose the right O ring size?

Choosing the right O ring size involves understanding your application requirements. Consider the following steps:

1. Measure the groove where the O ring will sit (inner diameter and width).
2. Refer to the AS568 O Ring Chart to find a size that matches or closely fits your measurements.
3. Ensure that the cross-sectional diameter provides adequate sealing without excessive compression.

5. Why is it important to use the correct O ring size?

Using the correct O ring size is crucial for effective sealing. If the O ring is too large, it may not fit in the groove properly, leading to leaks. Conversely, if it's too small, it might not create a sufficient seal, which can lead to system failures and potential damage. Ensuring the right size helps maintain the efficiency and safety of your application.

6. What materials are commonly used for O rings?

O rings can be made from various materials, including rubber, silicone, and polyurethane. The choice of material depends on factors such as the temperature, pressure, and type of fluid or gas involved. Always consult the material compatibility section of your supplier's documentation to ensure the selected O ring can handle your specific application conditions effectively.