Contains 4 o-rings for APEX Ultimate and Essence RO Systems (Includes ROES-50)
Replacement o-rings (also called seals or gaskets) are used to repair your leaking water filter housing
O-Rings have an approximate outside diameter of 3-5/8" (inside diameter approximately 3.36")
Manufactured and Warrantied by Captain O-Ring LLC
Refer to product images to show where this o-ring fits on the filter housing.