O-Rings are used to create a secure seal between the filter head (cap) and the filter sump (bowl).This o-ring is used in all Aqua-Pure Large Diameter Heavy Duty filter housing models.
Fits models: AP801, AP801-1.5, AP802, AP802.1.5C and other Heavy Duty Aqua-Pure filter housings.
Please Note: Some older AP800 Series housings use a square cut o-ring. The 3M o-ring is no longer available, but the Pentek 151254 will work.
