Paint Pressure Pot Tank Lid Replacement Rubber Gasket for 2.5 to 2.8 Gallon (10 Liter) Paint Pressure Tanks Replacement gasket to keep your tank lid sealed properly when in use. Outside Diameter: 10 5/16" Inside Diameter: 9 5/16" Thickness: 1/4" For 2.5 to 2.8 Gallon (10 Liter) Tank Lids