What is an O-Ring? |
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An o-ring is the thin rubber ring that is usually at the top of a housing. It looks like a tiny hula hoop. It is used to seal the cap (top) and the sump (bottom half) of the housing.
O-rings are sometimes referred to as gaskets. |
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What is a gasket? |
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A gasket is a thin rubber piece that is often part of a filter cartridge. A gasket looks like a frisbee with a hole in it. Gaskets help the cartridge seal to the housing.
Gaskets are sometimes referred to as o-rings. |
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Do I need a new O-Ring? |
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| Some people like to change O-Rings every time they change their filters to ensure that there will not be a leak. Others change their O-Rings only after changing the filter several times. |
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Should I use a lubricant on my O-Ring? |
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If you choose to reuse your o-rings, you should use a lubricant on them to keep them effective. You can use a special silicone lubricant such as this O-Ring Silicone Grease.
First, wipe your old O-Ring clean. Then wipe the groove in the filter housing clean. Finally, apply just enough lubricant on the O-Ring to give it a gloss. |
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Do I need to lubricate the gasket on the filter cartridge? |
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| Generally, no because each replacement filter cartridge comes with its own new gasket. |
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