O ring is 5 3 4 in diameter and can be used in place of the or 100 by culligan.
													
																	Big blue filter o ring. 
									
	
		
	
																	Pentek 151122 o ring for big blue hd housings 151122 pentek 151122 o ring is used for big blue heavy duty housings by culligan ametek pentek us filter plymouth kleen plus and american plumber. 
																	Captain o ring culligan compatible or 100 or100 o ring replacement for big blue filter housing buna n oring 3 pack 4 4 out of 5 stars 49 11 79 11. 
																	Pentek 151122 o ring is used for big blue heavy duty housings by culligan ametek pentek us filter plymouth kleen plus and american plumber. 
																	Captain o ring culligan compatible or 100 or100 o ring replacement for big blue filter housing buna n oring 3 pack 4 4 out of 5 stars 53 11 79 11. 
															
													
									
	
		
	
																	Having replacement o rings on hand is really a requirement unless you have a valve bypass which lets you turn your home s water back on without having the water going through a leaking whole house filter. 
																	The o ring set contains 3 pieces of 3 5 in. 
																	Standard under sink reverse osmosis system. 
																	Important o ring tips. 
															
													
									
	
		
	
																	Dow 111 silicone sealant and lubricant for o rings. 
																	The o ring serves as a gasket to seal the housing sump to the housing cap to prevent leaks. 
																	O ring is 5 3 4 in diameter and can be used in place of the or 100 by culligan. 
																	If you do not know the correct o ring size for your system you will need to open the filter housing to measure the diameter of the o ring. 
															
													
									
	
		
	
																	Replacement o rings for slim line big blue and standard water filter system housings. 
																	A replacement o ring for your big blue filter. 
																	Standard industry size o ring use to prevent leaks when customer need to change 3 pre filter of 10 in. 
																	An o ring is very important part of your water filter system and it should be maintained and replaced regularly. 
															
													
									
	
		
	
																	If your housing requires two o rings you will need to order two o. 
																	Single or double o ring housing some filter housings use a single o ring and others use two o rings. 
																	This is probably the biggest roadblock and source of leakage. 
																	Replacement o ring for big blue single o ring for big blue filter housings using 4 5 inch diameter filters to replace cracked or torn o rings that would allow water to leak. 
															
													
									
	
		
	
																	Replacement o ring for pentek 10 and 20 big blue and big black filter housings. 
																	Recommend to change all o rings once open the housing.