- Joined
 - Nov 27, 2010
 
- Messages
 - 5,198
 
- Reaction score
 - 5,097
 
- Points
 - 373
 
- Location
 - Copenhagen Denmark
 
- Printer Model
 - Canon MP990
 
You're welcome. Thanks for the feed-back 
			
			They seal the vent hole when the cart is not being used in the printer (just the same as the tape over the vent hole on bought/OEM cartridges). They don't really need to be coloured.Then if you have to remove these colored plugs due to clearance problems, then what is their purpose again?