GE SmartWater WS03X10038 O-Ring
The GE WS03X10038 O-Ring is used as a seal on the canister of GE whole house filter systems that use the following filters,
FXWSC,
FXWSC,
FXWTC and
FXUSC
The GE WS03X10038 O-Ring fits the following GE SmartWater filter systems,
GXWH01C,
GXWH04F, and
GXWH20F
The GE WS03X10038 O-Ring has an inside diameter of 3-5/16" and an outside diameter of 3-9/16".
When replacing this O-Ring you should lubricate it with some GE food grade silicone part number WS60X10005