This Culligan Replacement O-Ring for 3" Housings (OR-233) is made for under sink filtration systems. It fits Culligan models US-600A, SY-2000, SY-2300, SY-2500, SY-2650, and ACE 4158622A. However, it is a compatible O-ring replacement for all 3" diameter under sink water filter housings made by Pentek, Ametek, American Plumber, ACE, Omnifilter, US Filter, Plymouth, Kleen Plus, and other brands.

This O-ring gasket must be lubricated with silicone lubricant in order to prevent leaks in the water filtration system. Further installation instructions for this O-ring are included on the back of the packaging.

The Culligan OR-233 O-Ring is interchangeable with the following 3" O-rings:

• American Plumber O-Ring (OR-233, 151231-51)
• Ametek O-Ring (OR-233)
• Culligan O-Ring (OR-233, 411310)
• Pentek O-Ring (OR-233, 151231)
• US Filter O-Ring (OR-233)