Feature

●(3 Pack) OR-233 O-Rings. Used to seal the filter housing to the filter head/cap to fix and prevent leaks. These o-rings measure approximately 2-7/8" inside diameter x 1/8" thick.
●The OR-233 O-Ring has been branded under Ace Hardware, American Plumber, Ametek, Culligan, Pentek, Watts, US Filter Plymouth Products
●Compatible with the following filter models: Culligan SY-2000, SY-2100, SY-2300, SY-2300S, SY-2500, SY-2650, US-600, US-640, US-600A; ACE Hardware 4158622; American Granby HFHP75BSLBP, HFHP75BSLBP20, HFHP75CSLWP; American Plumber WLCS-1000, WRO-3000, WRO-3500; Pentek RO-3000, RO-3500; Pentek US-1000, US-1500; Watts WP-5, WP-4V
●Direct replacement for the following part numbers: American Granby HOR4, American Plumber 151231-51, OR-233; Ametek OR-233; Culligan 411310, OR-233; Pentek 151231, OR-233; US Filter OR-233; Watts WP113045
●Genuine Captain O-Ring Part (Manufactured and Warrantied by Captain O-Ring LLC)


Description

Captain O-Ring - OR-233 Water Filter Housing ORings (3 Pack)

Part Number OR-233
Direct Replacement For American Granby HOR4, American Plumber 151231-51, OR-233; Ametek OR-233; Culligan 411310, OR-233; Pentek 151231, OR-233; US Filter OR-233; Watts WP113045
Filter Housing Compatibility Culligan SY-2000, SY-2100, SY-2300, SY-2300S, SY-2500, SY-2650, US-600, US-640, US-600A; ACE Hardware 4158622; American Granby HFHP75BSLBP, HFHP75BSLBP20, HFHP75CSLWP; American Plumber WLCS-1000, WRO-3000, WRO-3500; Pentek RO-3000, RO-3500; Pentek US-1000, US-1500; Watts WP-5, WP-4V
Inside Diameter Approximately 2-7/8"
Outside Diameter Approximately 3-1/8"
Cross Section (Thickness) Approximately 1/8" (0.14" Actual)

The OR-233 o-ring is compatible with the following filter models:

  • ACE Hardware 4158622
  • American Granby HFHP75BSLBP, HFHP75BSLBP20, HFHP75CSLWP
  • American Plumber WLCS-1000, WRO-3000, WRO-3500
  • Pentek RO-3000, RO-3500
  • Culligan SY-2000, SY-2100, SY-2300, SY-2300S, SY-2500, SY-2650, US-600, US-640, US-600A
  • Pentek US-1000, US-1500
  • Watts WP-5, WP-4V

The OR-233 o-ring is a direct replacement for the following other part numbers:

  • American Granby HOR4
  • American Plumber 151231-51, OR-233
  • Ametek OR-233
  • Culligan 411310, OR-233
  • Pentek 151231, OR-233
  • US Filter OR-233
  • Watts WP113045

Sizing/Dimensions:

The OR-233 o-ring measures approximately 2-7/8” inside diameter x 3-1/8” outside diameter x 1/8” thick (0.14" actual thickness). Please confirm these exact dimensions or the OR-233 part number (or other part numbers listed above) required in your water system before purchasing.

What to expect:

This item includes three (3) OR-233 o-rings in a resealable zip-top poly bag with "Captain O-Ring" branded packaging.

Frequently Asked Water Filter O-Ring Questions

How often do I need to change my filter housing's o-ring?How often do I need to change my filter housing's o-ring?

Can I use grease or lubricant on these o-rings?Can I use grease or lubricant on these o-rings?

How often do I need to change my filter housing's o-ring?How often do I need to change my filter housing's o-ring?

How often do I need to change my filter housings o-ring?

Captain O-Rings high quality replacement water filter housing o-rings are designed for reliable extended use. Still, it is typically recommended to replace your o-ring on every third filter change to ensure it is in top shape to prevent leaks.

Can I use grease or lubricant on these o-rings?

Since Captain O-Ring supplies high quality o-rings without surface imperfections or tacky/sticky surface texture, lubrication is typically not needed if the filter housing sealing surfaces are clean and free of debris. Simply wet the o-rings with water before installing. However, if lubrication is preferred, these Buna Nitrile rubber o-rings are compatible with silicone based and petroleum based lubricants, as well as natural lubricants like vegetable oil.

What if I dont know what o-ring part number my filter housing needs?

Not sure which o-ring part number you need for your filter housing? Use our handy printable water filter housing o-ring size chart. Simply print out the chart and lay your old o-ring on the page to see which o-ring it matches with. You can find the size chart listed as "User Guide [PDF]" under the "Product guides and documents" section or the "downloads" section on this page, depending on your Amazon page layout.

Product guides and documents

Installation Manual (PDF)
User Guide (PDF)