Special Features: Standard Pushbutton Size Is 30.5mm Oil Resistant Gasket. Secured With an 8-32 X 0.55" Threaded Stud and Plated Wing Nut. Steel Hole Plug - Available in 12 Sizes. Stainless Steel Hole Plugs - Available in 8 Sizes
Application: Designed to Seal Unused Pushbutton Holes, Conduit Openings and Knockout Holes Against Dust, Oil and Water