Fremco cable gasket 103-10242 is the 5.5 mm size, packed six per set for lightweight MiniFlow fiber blowers. It forms the air seal around 5.5 mm fiber optic cable at the machine inlet so compressed air stays behind the cable and pushes it forward instead of venting back. Small-diameter drop and micro cable depends on a close gasket fit to reach full blow distance. Because gaskets wear against the moving jacket, six-piece packs match normal field replacement intervals. Available from Millennium as part #612263.