Product Overview The ink jet port plug on HP bag-style cartridges may become damaged through repeated use or lost. Static Control’s replacement ink jet port plug allows remanufacturers to successfully remanufacture these cartridges. The replacement ink jet port plug is compatible with the following bag-style cartridges: HP 10 HP 11 HP 12 HP 18 HP 38 HP 84 HP 85 HP 88