Damper containing internal lubricant

The present invention provides a damper for a fuel system. The damper includes a first chamber with an interior surface, and a second chamber with a fuel receiving opening. A diaphragm separates the first chamber and the second chamber. A device is disposed within the first chamber that biases the diaphragm toward the fuel receiving opening. A retainer, which supports the device proximate the diaphragm, is located in the first chamber. The retainer has a surface exposed to the interior surface of the first chamber. A lubricant is disposed on at least one of the interior surface of the first chamber and the surface of the retainer.