Changing out o-rings in your pool equipment can seem like a quick and easy task. And it is. Compared to other replacement parts, o-rings are rather inexpensive and are fairly easy to replace. However, failing to replace your o-ring can cause damage to other parts within your pool equipment resulting in a lot more spending.
O-rings and gaskets are typically made from an elastic-type rubber and are designed to seal, or in our case, help prevent water from entering in. O-rings are prevalent in most pool equipment including pumps, filters, chlorinators, valves, and heaters. Most pool owners know at some point they need to change the o-rings on their filter. However, most are unsure when and how often.
Pool filters may come with several different o-rings, but the one that tends to wear the most is the tank o-ring. The tank o-ring is the large round o-ring located between the filter head and filter body. It can be found in all three types of pool filters: sand, cartridge, and diatomaceous earth (D.E). Sand and D.E filters may have additional smaller bulkhead and valve o-rings which should also be changed routinely.
Pool owners tend to replace their filter o-ring once they notice water leaking down their tank. The only problem with waiting until you see the leak is the potential damage it can cause in the meantime. O-rings should be checked every time you replace your cartridge or grid elements and every time you clean your filter. It is never a bad idea to check other parts while your have a particular part open, whether a filter, pump, or chlorinator. Examine the o-ring for tears, rips, cracks, or any damage or defect that may compromise the seal.
Three Indicators of a Bad Seal
The filter seems to leak when under pressure or when the filter is turned off.
- If your pump is losing pressure and you checked your pump for leaks. A faulty seal in your filter could be the culprit.
- An increase in water loss in an above ground pool.
All of these are signs that the filter o-ring may not be reliable anymore and we recommend you change it immediately
Once you purchase your new o-ring, there are a few steps you can take to prolong its life. O-rings should last several pool seasons with proper care. Be sure to examine the new o-ring before installing it. If you see any tears, rips, or anything that seemingly compromises the quality of the o-ring, do not install it and return for a replacement.
Also, use the proper lubrication for your o-ring. You should use Magic Lube II or another silicone-based lubricant, not Teflon. Teflon will dry out the rubber and eventually cause it to crack.
O-rings vary depending upon the make and model of the filter. If you need help identifying the correct o-ring for your filter, do not hesitate to give us a call at 877-372-6038. We’re always here to help!