• Manufacturer: Astral 

• Material: Rubber 

• Compatible Part Numbers: 190280204 and 19028R0204 

The Astral Replacement Spider Gasket – 19028-0204 is a replacement gasket for many types of Astral top-mount valves for your pool or spa. The 10928-0204 gasket is designed to be a diverter gasket and is made of durable black rubber. It has four spokes with an inside diameter of 1-1/16” (the measurement of the inside of the interior hole). The outside diameter is 5-1/16” and its spokes have a width of 3/16”. There are no markings on the gasket.