Wiegmann WAS050 Hole Seal Brand: Wiegmann. Part Number: WAS050. Wiegmann Hole Seal, Oiltight, 0.88 in Dia, 1/2 in Conduit, For Use With: General Enclosure, Carbon Steel, Polyester Powder Coated/Smooth, Gray. Additional Description: WGMN-WAS050 OIL TIGHT HOLE SEAL 1/2 IN. CS - GRY GASKETED. Catalog Description: Oil Tight Hole Seal 1/2 Inch Carbon Steel - Gray..