How to Seal the O-Ring on a Swimming Pool Filter


Swimming pool filter O-rings are commonly made from EPDM rubber because of its ability to withstand harmful outdoor conditions. Only silicone-based lubricants can be used on the O-rings because the chemical composition of the rubber breaks down with the use of petroleum-based lubricants. O-rings are found in a number of locations on a swimming pool filter and each O-ring seals in the same manner. Take the appropriate steps to seal the O-rings on the filter to avoid future damage.

Things You'll Need

  • Soft cloth
  • Silicone-based lubricant

Video of the Day

Clean the area around the pool filter where the O-ring installs to remove traces of diatomaceous earth or debris in the area with a soft cloth. A filter has several O-rings in different locations. They install on the pressure gauge and the tank adapter at the top of the filter. A large O-ring exists between the top and the bottom of the tank on two-piece swimming pool filters. Other O-rings install in the filter outlets, inlets and drain plug.

Wipe the O-ring clean with a soft cloth to remove debris and old sealant. Debris and old sealant could cause the O-ring to not seal properly.

Inspect the O-ring for damage, such as cracks or crimped areas. Replace the damaged O-ring if necessary.

Apply a thin coat of silicone-based lubricant for use on a swimming pool filter’s O-rings. Ensure you coat the entire O-ring with lubricant.

Install the O-ring into the swimming pool filter. Determine the O-ring seats snugly in the groove and does not protrude from the groove or kink; protruding O-rings could indicate the ring is old and needs to be replaced.

Tips & Warnings

  • Do not apply too much lubricant to the inlet, outlet and drain plug O-rings. Dirt and debris can stick to the excess lubricant, clogging the tubes.


Promoted By Zergnet

You May Also Like

Is DIY in your DNA? Become part of our maker community.
Submit Your Work!