Step 1: Lubrication

APG highly recommends lubrication for o-ring installation. We recommend this because a well-lubricated o-ring reduces surface friction and creates a smooth transition for installation. It is essential to choose the right lubricant, and the proper formula will vary based on the type of application as well as the o-ring material. Choose a lubricant that will work with your application and the o-ring.

Compatibility with your application is crucial because you don’t want to clog the system filters or cause other complications. Choosing a lubricant compatible with your o-ring will ensure that it does not shrink or swell, influencing how it performs once installed. Compatibility with your application is also essential because choosing a lubricant compatible with your o-ring will ensure that it does not shrink or swell, influencing how it performs once installed.

Step 2: Confirm Sizing

Once you have confirmed that your lubricant is safe for use with your O-Ring and your application, it is a good practice to double-check the o-ring size. The wrong size can lead to a damaged seal, poor performance, or a damaged system. 

Step 3: Installation 

Once you have verified the lubricant compatibility and size, you are ready to place the o-ring. If necessary, cover any sharp edges during the installation process to avoid damage to the o-ring. Lightly lubricate the o-ring and place it in the groove, sliding it, not rolling it into place. In some instances, special o-ring tools can help to properly place an o-ring that cannot be easily placed by hand. A well-placed o-ring should be slightly stretched before application, but don't over-stretch it. This stretch should be between 1-5%, with 2% ideal for most applications.