Water Filter Housing Replacement O-Ring for 3M AP101T / AP102T by CFS

Water Filter Housing Replacement O-Ring for 3M Aqua-Pure AP101T / AP102T. This o ring can also be used as a replacement for models AP141T and AP11T. The o ring itself actually measures approximately 3.5 inches (inside diameter). We recommend consumers keep a spare o ring on hand to avoid urgent situations. An o ring facilitates a water tight seal between the water filter sump and the water filter head. The most common o rings (o-rings) used in water filtration are made from Buna N material. Buna N is also commonly referred to as nitrile. This is the ideal choice for cold water filtration because they are inexpensive and have superior performance characteristics.