Image H-Series ISO-B Rigid Dust Plug Markets Agriculture & Forestry Jump to Section Product Options Related Products Product Options Part Number Body Size Material 2HDP-A 1/4" Aluminum 3HDP-A 3/8" Aluminum 4HDP-A 1/2" Aluminum 6HDP-A 3/4" Aluminum 8HDP-A 1" Aluminum 12HDP-A 1-1/2" Aluminum Related Products Image H-Series ISO-B Dust Cap/Plug Image H-Series ISO-B Food Grade Nylon Flanged Female Threaded Coupler Image H-Series ISO-B Food Grade Silicone Flanged Female Threaded Coupler Image H-Series ISO-B High Volume Female Coupler Image H-Series ISO-B Female Threaded Couplers Image H-Series ISO-B Repair Kit Image H-Series ISO-B Steel Mill 'Slide Gate' Female Threaded Coupler