The BKI G0016 Orange Silicone Lid Gasket is better for sealing fryers and has an outer diameter of 18’ with a thickness of 0.646” x 0.420”. Cut from high quality orange silicone material, it forms a firm seal that will help avoid seepage and enhance the performance of the fryer. https://www.partsfe.co.uk/bki-barbeque-king-g0016-orange-silicone-lid-gasket