Pentair Nautilus Plus SS Filter Tank O-Ring 071442<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Pentair</li><li>Anthony Apollo Flowmaster 4000/5000 and many different Pentair filters</li><li>creates a watertight fit</li><li>makes connection more secure</li><li>prevents leaking</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31PmgnOLMdL.jpg" noproxy>