The Cleveland 100330 Black Rubber Hand Hole Gasket helps create a dependable seal, supporting proper equipment operation and reducing the risk of leaks. Measuring 5-1/16" x 4-1/8" and designed as a Type C gasket, this component fits between mating surfaces around a hand hole opening to form a tight seal when compressed. It works by preventing the escape of liquids, steam, or pressure ... https://partsfe.ca/hand-hole-gasket-ns5-116-x-4-18-for-cleveland-part-100330