The MicroFit gas block connector was designed to prevent leaking of gas between duct and fiber optics cable inside. The MicroFit gas block connector has an internal seal that can be open to permit blowing through or closed so the seal contacts the fiber and prevents the flow of gas.

When selecting a gas block connector, choose by noting both the microduct size and also the fiber cable inside.

By selecting the correct gas block, various sizes of fiber cable can be accommodated.