OR-250 Water Filter Housing O-Ring
Product description
Key specifications
A worn or missing housing O-ring can make routine water-filter maintenance more frustrating. This OR-250 replacement is sold as a three-pack and is listed for several specific filter housings, giving you spare rings for future replacements without buying a larger assortment.
Each ring has a 5-1/2-inch inside dimension and is just over 3/16 inch thick. Those measurements are useful when comparing it with the ring already in your housing, compatibility should be based on the listed models, not on the assumption that every water-filter housing uses the same size.
Who it’s for
This replacement is intended for owners of Culligan WH-HD200-C, 3M 3WH-HD-S01, AP801B, AP801T, AP802B, and Dupont WFAO100 water filter housings. It makes sense if you want a few replacement rings on hand for maintenance and your housing matches one of those model numbers.
It might not be a great match if your housing is a different model or you cannot confirm the part dimensions. The product information does not list compatibility beyond the named housings, so treating it as a universal O-ring would be a gamble. From the way it is set up, the main buying decision is whether your existing housing matches—not whether you need a full filter system.
What’s included
The pack contains three OR-250 O-rings. That gives you one to install and extras to keep with your filter supplies. For example, if you open the housing during a filter change and find that the existing ring needs replacement, you can use one from the pack and retain the others for later service.
The listing describes installation as simple, but it does not provide installation steps or details about the ring’s material. If you need material-specific information or instructions for your particular housing, those details are not established here. This is a replacement part, not a complete water-filter housing or filter cartridge.
Questions before you buy
Which housings are listed as compatible? The product information names Culligan WH-HD200-C, 3M 3WH-HD-S01, AP801B, AP801T, AP802B, and Dupont WFAO100 housings.
How many O-rings come in the pack? It includes three replacement rings.
What are the listed dimensions? The inside dimension is 5-1/2 inches, and the ring is just over 3/16 inch thick.
Should you buy it?
Choose this pack when you need an OR-250 replacement for one of the named housings and want spare rings available for later maintenance. Compared with buying a complete housing or a broad assortment of parts, this is a narrower, replacement-only purchase. That focus is useful when you already know the part and model you need, but it offers little guidance for identifying an unknown ring. If your housing model or dimensions do not line up, look for a replacement specified for that exact unit instead.