O-Ring Bulkhead Other Products Using This Part: 184943 NSP48 - Nautilus Plus 48sqft D.E. Filter with Stainless Steel Tank 184941 NSP24 - Nautilus Plus 24sqft D.E. Filter with Stainless Steel Tank 184944 NSP60 - Nautilus Plus 60sqft D.E. Filter with Stainless Steel Tank 184943 NSP48 - Nautilus Plus 48sqft D.E. Filter with Stainless Steel Tank 184941 NSP24 - Nautilus Plus 24sqft D.E. Filter with Stainless Steel Tank 184944 NSP60 - Nautilus Plus 60sqft D.E. Filter with Stainless Steel Tank 180009 FNSP60 - FNS Plus 60sqft Vertical Grid D.E. Filter 180007 FNSP36 - FNS Plus 36sqft Vertical Grid D.E. Filter 180008 FNSP48 - FNS Plus 48sqft Vertical Grid D.E. Filter 160340 CCP320 Clean n Clear Plus 320sqft Cartridge Filter