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Poolking, your best swimming pool equipment manufacturer and supplier with more than 20 years experience.   ​​​​​​​  Email: sandy@poolking.co

how to shrink pool filter o-ring

How to Shrink Pool Filter O-ring

Pool filter O-rings are designed to make a watertight seal between the filter housing and the filter head. These O-rings are made of rubber which naturally expands over a period of time, causing leaks that can lead to further pool damages if not repaired. In this article, we will explore how to shrink pool filter O-ring by following some easy steps.

What is a Pool Filter O-ring?

Before we dive into how to shrink pool filter O-ring, it's important to understand what an O-ring is and its role in pool filtration. The O-ring is a small rubber seal that sits in the filter's housing groove and creates an airtight seal between the filter head and the housing of the filter. O-rings expand due to heat, water, and pressure and eventually will become too large to create the needed seal, which is why sometimes it is necessary to adjust them.

Why Do I Need to Shrink Pool Filter O-ring?

If your pool filter's O-ring is too big, it can create leaks and affect the filter's performance by allowing water and air to escape. Thus, to avoid further damage, it is a must to adjust the O-ring's size before it's too late.

How to Shrink Pool Filter O-ring?

Reducing the size of a pool filter O-ring is a relatively simple task that can be done by following these easy steps:

1. Remove the O-ring from the pool filter.

Before making any modifications, it's imperative to remove the O-ring from the pool filter to avoid damaging it.

2. Prepare a Container of Ice Water

Cold water causes the rubber to contract, which is why ice water is the best method to shrink a pool filter O-ring. Fill a container with half ice and half cold water.

3. Soak the O-ring

Once the container is filled with ice water, soak the O-ring into the mixture for at least 15-20 minutes.

4. Check the O-ring Size

After soaking the filter O-ring for 15-20 minutes, the next step is to measure its size against the diameter of the filter housing. If the O-ring has shrunk to the required size, it's ready to be reinstalled. But if the rubber hasn't contracted yet, repeat the process until it's small enough to create the desired seal.

5. Inspect for Damage

Inspect the O-ring for any visible damages, cracks or tears, if so, it might be better to replace it instead of using it again.

Conclusion

In conclusion, knowing how to shrink pool filter O-ring is essential to ensure your pool's quality by preventing leaks and further damages to the filter systems. It's an easy, affordable and quick solution to restore the rubber to its original size and create a satisfactory seal. However, keep in mind that O-rings do wear out over time due to the natural rubber aging process, so it's essential to regularly inspect them and replace them when needed.

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