4.5" Replacement O–Ring for Whole House and Well Water Filter Filter Housings 4.5x10 and 4.5x20

O rings are advertised as 4.5” after ordering & receiving, I found o rings to be closer to 5.5” which is nowhere near what I was expected.However return & refund were easy & quick.

Too expensive for just one piece.

These o rings don't fit the aquasana filters, which are a true 4.5" not sure what these o rings are meant for but if you have an aquasana system, these are the wrong ones.

This is supposed to fit the Bluonics 4½ x 20 inch water filter.It is too big for the application. When put in the o-ring groove it bunches up and is too large, similar to the stretched one I was replacing but WORSE and can not be used.Waste of $12 + change.

Bought and installed two Blueonics 4.5" Whole House water filters. Well made with brass fittings. BUT the o-rings that came with them are impossible to keep from leaking, especially true when replacing filters. The o-rings the company offered at the time, and unless they have gone with different ones, simply DON'T fit. They WILL leak. After trying a number of different 0-rings, the only ones that seemed to fit without massive leaking were this size:5.2" Inside Diameter x 5.6" Outside Diameter x 0.215" Thicknesshttps://www.amazon.com/gp/product/B094V4GQZX/ref=ppx_yo_dt_b_asin_title_o00_s00