O-Rings are used to create a secure seal between the filter head (cap) and the filter sump (bowl). The 5-3/4″ Diameter O.D. O-Ring is used in all Watts Flowmatic 10″ and 20″ Full-Flow (B-B) filter housing models FH5000 and FH10000. Also fits High Flow (BB) Housing series H-10BB and H-20BB
Fits Flowmatic Full Flow models:
FH5000BL34PR, FH5000BL1, FH5000BL1PR, FH5000BB1PR, FH5000BL15, FH5000BL15PR, FH5000WW1PR, FH5000WW15PR, FH5000CB1P, FH10000BL34PR, FH10000BL1, FH10000BL1PR, FH10000BB15PR, FH10000BL15, FH10000BL15PR, FH10000WW1PR, FH10000WW15PR, H-10BB-15PR, H-10BB-1NPR, H-10BB-1PR, H-10BB-3/4NPR, H-10BB-3/4PR, H-20BB-15PR, H-20BB-1NPR, H-20BB-1PR, H-20BB-3/NPR, H-20BB-3/4PR
