Shopping Search

The Watts Flowmatic OR-4 O-ring is the replacement oring for Watts Flowmatic 500 4000 4200 7000 and Watts VIH Housings. The Watts Flowmatic OR-4 O-ring is the replacement oring for Watts Flowmatic FMRO5G and FMRO4G Sumps. It is important to keep the OR-4 oring lubricated with silicone lubricant to prevent leaks in the water filtration system. The OR-4 oring should be replaced every two filter changes or if there is damage to the OR-4 oring.