Check the listing for details. Poly Plug Buttress Bung Cap 2" with 3/4" Knock Out with Gasket for Poly Drum, Br. Condition: New. Listed at 6.69 USD. Poly plugs for poly drums with 2" BUTTRESS (Coarse threads) and 3/4" Knock Out NPT threads Includes White EPDM gaskets suitable for most industrial chemicals and FDA listed so it can be used with food products Choose quantity options1 Plug5 Plugsor 25 Plugs For use with poly drumsFor tight head or closed top drumsComes with gasketsBUTTRESS threads with 3/4" Knock Out NPT threads Most Plastic 55 gal barrels have one coarse and one fine threaded bung. These have a threaded center that you can remove the center to allow a spigot or pump to be installed. We also have Drum bung plugs for steel and Plastic Barrels as well as Sealcaps See our Category PETROLEUM EQUIPMENT Track Page Views With Auctiva's FREE Counter