Food serving pans made from heat conductive materials include a gasket positioned over a flange to protect fingers from heat or cold, improve gripping ability, seal against countertops of food serving tables, and/or protect paint or non stick coating from chipping off the flange. The food pan is made from aluminum or other highly heat conductive material. The gasket comprises silicone or other heat resistant and insulating elastomer. A food serving system includes one or more food pans and a food serving table. The food pans maintain food at a desired temperature by efficiently transferring heat or cold from the serving table while the gasket seals against a countertop of the serving table. The gasket can be provided in a kit of differently sized and/or shaped gaskets so as to fit over differently sized and/or shaped pan flanges. A user can install and replace the gasket as needed.