Things You Need to Know When Installing O-Rings

Dec 9, 2020

O-rings are a crucial element in manufacturing and the operating of machinery but when it comes to installing rings, it is important you know what to look out for.

When it comes to installing O-rings, it’s important that you get it right from the beginning as this will help to save time and money. Therefore, these installation tips can help you to avoid problems that could cause issues with applications further down the line.

Choose the Right Size – It’s crucial that you choose the correct size O-ring. If you go for one that is too small, then they tear and break while too big will not achieve the correct seal.

Don’t Overstretch – Every O-ring has a maximum stretch potential and if you overstretch them then they can break and tear during use. Therefore, it is crucial that engineers make  sure that the stretch does not go beyond that of the maximum elongation of the O-ring. What’s more, it is also crucial to stretch the O-ring evenly.

Don’t Roll It – When sliding an O-ring down a shaft for installation, it can cause the O-ring to spiral. When this happens it means that they cannot be installed correctly and that means that they will not do their job properly. This can then lead to leaks or damage. The O-ring should be slid into place as this helps to stop spiralling. If you are having problems, then lubricant can help.

Be Aware of Threads – O-rings are commonly fitted with threaded parts but these can commonly cause the O-ring to tear. When installing over a thread, cover the thread with masking tape as this will help the O-ring to slide over the threads without being damaged. If required, it is possible to use lubricant too.

Avoid Sharp Edges – Sharp corners and edges are often seen in manufacturing machinery and application and these can cause problems with O-rings. Some tears are small enough to go unnoticed which means that they can cause significant problems. So, don’t force the O-rings onto sharp corners or edges but instead attempt to use a lubricant to slide them into place if necessary.