You want your printer hot, and you want to also be cool – these black rubber Extrusion Blind Joint Seals may just help you get there.

This extrusion blind joint seal is designed by LDO to be used inside 2020 aluminum extrusions. It helps prevent gases from escaping during printing and also reduces outside air from entering, creating a more stable printing environment.

The installation method is the same as a T-nut: insert one side first, then press the other side in. Finally, slide it along the extrusion slot until it reaches the end. Please refer to the illustration for guidance.