A rivet sealing washer that includes a washer body with an outer surface and an inner surface and a rivet aperture. Additionally, the rivet washer includes a membrane with at least one raised high pressure point skirt or rib and at least one recessed trough that provides a continuous seal over the outer surface of the washer body, the rivet body, and the mandrel head, and is sealably and continuously connected to the perimeter of the washer body and optionally a circumferential portion of the outer surface.