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Water Filter O-Ring Replacements

While they may seem like a trivial part of a water filter system, water filter o-rings are one of the most important pieces of your water filter system.  They prevent leaks and allow your water filter to do what it was meant to do, filter your water.  O-rings on your water filter system should be replaced every 2 filter changes to help protect your water filter system from leaks. 

Not sure, of the correct O-ring size for your water filter system, open the filter housing and measure the diameter of the existing O-ring. Still can’t figure out what size o-ring you need for your water filter system, give our experts a call, 1-800-277-3458 They’d be happy to help.  Note: the O-ring size is not related to the filter, but rather to the filter housing.

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  1. Tier1 Replacement O-Ring and Lubricant Kit For Whole House Systems Using a 2.5 Inch Replacement Filter

    Replacement O-Ring and Lubricant Kit For Whole House Systems Using a 2.5 Inch Replacement Filter By Tier1

    Fits into most standard whole house water filtration system housings Learn More

    (Retail Price: $6.99 ) $4.99

  2. OR-34 Tier1 O-Ring

    OR-34 Tier1 O-Ring

    Sized at 4 inches and fits into most standard whole house water filtration system housings Learn More
    $1.99 MSRP:  $3.44
  3. OR-38 Culligan Undersink and RV Filter O-Ring

    OR-38 Culligan Undersink and RV Filter O-Ring

    Fits Culligan undersink and RV filter systems including US-550, US 560, SY-5167, and SY-5197 Learn More
    $4.99 MSRP:  $9.19
  4. OR-34A Culligan Whole House Filter O-Ring

    OR-34A Culligan Whole House Water Filtration System O-Rings

    Fits Culligan and Ace whole house water filtration systems, including the HF-150, HF-160, HF-360, 45025, 46764 and 49560 Learn More
    $4.89 MSRP:  $8.99
  5. OR-233 Culligan Whole House Filter O-Ring

    OR-233 Culligan Whole House Filter O-Ring

    Fits Culligan whole house filter systems including SY-2000, SY-2100, SY-2300, SY-2500, SY-2650, US-600, and US-640 Learn More
    $4.89 MSRP:  $8.99
  6. OR-100 Culligan HD-950 O-Ring

    OR-100 Culligan HD-950 O-Ring

    Fits Culligan HD-950 whole house water filter systems Learn More
    $6.99 MSRP:  $11.99

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