O-rings have many industrial applications, as they seal and prevent leaks. However, like other mechanical components, O-rings have a limited lifespan. When should you replace them? Most experts recommend replacing them at least once every year. But, you must check for signs of damage to make your replacement decisions. If you use the rings in harsh conditions, they need more frequent replacements.
Signs indicating your O-rings need replacements
Visible deterioration signs – While inspecting the O-rings visually, you may notice discolouration and chips. These signs indicate that the O-rings will lose their sealing potential. So, you must replace them without delay.
No elasticity – You need to touch the O-ring to determine if it is elastic. Inflexible and stiff O-rings need to be replaced. The newer ones can stretch and compress easily. As the stiff ones cannot provide a good seal, replace them.
Compression set – A prolonged compression causes deformation to your O-rings. This permanent issue indicates that the component has undergone deformation. The deformed O-rings will not provide effective sealing.
Extreme temperature – Too high temperatures affect a standard O-ring’s performance. This component can endure a particular temperature range. If the temperature exceeds, it becomes brittle or shows shrinkage issues. Consult the best seal O-ring supplier in Australia to know the safe temperature range for the component.
Chemical compatibility – Harsh chemicals can damage O-rings and other components. Exposure to incompatible chemicals may lead to damage to your O-rings. You need to replace these components within a short time.
Age – Are you currently using old O-rings for your industrial systems? Natural aging may affect the overall performance of the components. Replace the old rings, although they appear to be good.
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Other ways to determine if O-rings need to be replaced
Measure the dimension and shape – You have to measure the wire diameter and cross-sectional diameter of your O-rings. The O-ring’s size decreases over time because of the compression set. An increase in size also affects the sealing ability.
The O-ring’s cross-sectional shape should be consistent. Normal O-rings are rounded; however, if you have found them twisted or flat, replace them without delay. Sometimes, long-term stress and improper installation cause this issue.
Test the performance – Apply some pressure to your sealing assembly that includes an O-ring. This will help you observe the potential leakage and the ring’s sealing ability. You may also use leakage detection tools like bubble detectors. This is an effective method for detecting small leaks.
Consider the operating environment – O-rings operating under high pressure and temperatures need frequent replacements. Continuous vibrations also affect the average lifespan of your O-rings. Depending on the manufacturer’s recommendations, you may create a replacement schedule for your O-rings.
Summary
There are different ways to determine if you should replace your O-rings. With visual and tactile inspection, you can check their condition. However, even if your old O-rings look good, you can still replace them. You should install these components properly to prevent a shorter lifespan. Inspect them regularly to avoid leakage issues.
