The E.H.C. Buttress Cap/Plug is a reliable sealing solution designed for 2" buttress (fine thread) openings, making it ideal for drums, pails, and similar containers. Each cap features a convenient 3/4" knockout/vent option, giving you the flexibility to use it as a fully sealed plug or a vented cap depending on your application. An included EPDM gasket ensures a secure, leak-resistant fit, providing peace of mind when storing or transporting liquids and other materials. Crafted from durable polyethylene in a clean white finish, these round caps measure 2" in diameter and are built to last. Made in the US by E.H.C., each package contains 2 bung cap/plug units, so you always have a spare on hand. Lightweight at just 0.25 ounces, these caps are easy to handle and install. Whether you're sealing industrial drums or storage containers, this buttress cap/plug delivers dependable performance and a tight seal every time.