Fremco cable gasket 103-10244 is a 6.5 mm gasket supplied six pieces per pack for lightweight MiniFlow-class fiber blowers. The gasket seals around the fiber optic cable where it enters the machine, containing the air that drives the cable down the duct. Sizing must match the cable diameter closely: an oversized gasket leaks pressure and shortens the blow, an undersized one drags on the jacket. Gaskets are consumables that wear with cable passage, so crews stock the sizes their cable inventory requires. Millennium part #612267.