1 Unit Consists of 3 Pieces: Cover with Gasket, Steel Backplate and Wingnut Powder-coated grey (ANSI 61) Steel NEMA Ratings: Type 3R, 4, 4X, 12, 13 Oil-resistant gasket (included)

Used to seal any conduit hole, knockout hole, push-button hole, or other opening against dirt, dust, oil and water. Maintains enclosures Type rating 3R, 4, 4X (Stainless Steel version only) 12, and 13 when installed in an appropriate enclosure. Each hole seal has oil-resistant gasketing and plated stud and wing nut.