Part # 4040-17A
Manufacturer Code SP1085D
Dimensions 18" X 8-1/4"
Alternate Part #'s 2511935, G157, HAY2511935, HAYSPX1085D, SP-1085-D, SP1085D, SPG-601-1007, SPX1085D, SPX1085DPAK2
GASKET, SKIMMER WIDEMOUTH (HAYSP-1085-D) (QTY 2)
The original gaskets are like a rubber material. These 2 gaskets look as if they are made of cork? Are they made of cork or something else?