Pentair 24850-0009 25-Inch Cord O-Ring for Tank Replacement for Select Sta-Rite Pool and Spa Filters<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Cord O-ring for tank replacement</li><li>Fits Sta-Rite System 3 Modular Media SM series pool and spa cartridge filter model S8M150， S8M500</li><li>Compatible with Sta-Rite System 3 SD series pool and spa D.E. filter model S8D110</li><li>Fits with Sta-Rite System 3 SS series pool and spa sand filter model S8S70</li><li>Measures 25-inch size</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31Cz-AgMNeL.jpg" noproxy>