Caplugs are a critical proector for many aerospace applications. No matter the application Monroe aerospace carries a full line of Caplug products to protect your parts in all stages. Monroe Aerospace is a stocking distributor of Aerospace and Mil-Spec hardware. We have an extensive inventory of caplugs. Every part that we sell is in Factory new (FN) condition and we provide our company’s certificate of conformance for all parts on every order. See below for our products.