Mailing Tube End Caps

In addition to our mailing tubes, Armbrust keeps a selection of extra mailing tube end caps available to better serve our customers. Our end closures are durable and versatile in use, so you can save money and reduce waste through reuse on a variety of tubes over a long period of time. The plugs we provide won’t pop off during transit, so you can secure your materials in a simple and enduring manner. We carry our end caps in 68 different stock varieties that are ready to ship, and we are able to meet custom orders to fit your specific application. We offer our tube end closures in white plastic, heavy duty black plastic and metal, with sizes range from 1 ½” up to 12”. With a state-of-the-art production facility and over 75 years of experience in meeting the most demanding projects, Armbrust has what it takes to exceed your expectations. Have a custom order? Send your quantities and specifications for a free estimate, and we will be happy to serve your needs!

Tube End Closures

white plastic plugs

White Plastic Plugs

black plastic plugs

Black Plastic Plugs

metal plugs

Metal Lock-in Plugs



Code Name Weight Price  
WP-15 White Plastic Plugs 1 1/2” 0.00 $0.03
WP-125 White Plastic Plugs 1 1/4” 0.00 $0.03
WP-175 White Plastic Plugs 1 3/4” 0.01 $0.03
WP-1375 White Plastic Plugs 1 3/8” 0.00 $0.03
WP-1875 White Plastic Plugs 1 7/8” 0.01 $0.05
WP-10 White Plastic Plugs 10” 0.19 $0.67
WP-12 White Plastic Plugs 12” 0.43 $1.53
WP-1625 White Plastic Plugs 15/8” 0.01 $0.03
WP-1 White Plastic Plugs 1” 0.00 $0.03
WP-25 White Plastic Plugs 2 1/2” 0.01 $0.04
WP-225 White Plastic Plugs 2 1/4” 0.01 $0.04
WP-2125 White Plastic Plugs 2 1/8” 0.01 $0.08
WP-275 White Plastic Plugs 2 3/4” 0.01 $0.04
WP-2875 White Plastic Plugs 2 7/8” 0.01 $0.07
WP-2 White Plastic Plugs 2” 0.01 $0.03
WP-35 White Plastic Plugs 3 1/2” 0.01 $0.06
WP-325 White Plastic Plugs 3 1/4” 0.02 $0.09
WP-3937 White Plastic Plugs 3 15/16” 0.02 $0.14
WP-3625 White Plastic Plugs 3 5/8” 0.02 $0.07
WP-3 White Plastic Plugs 3” 0.01 $0.05
WP-475 White Plastic Plugs 4 3/4” 0.03 $0.32
WP-4 White Plastic Plugs 4” 0.01 $0.08
WP-5 White Plastic Plugs 5” 0.08 $0.17
WP-6 White Plastic Plugs 6” 0.06 $0.31
WP-7 White Plastic Plugs 7” 0.04 $0.42
WP-8 White Plastic Plugs 8” 0.06 $0.48