Parker Aerospace’s selection of fittings and couplings comprises ground service equipment (GSE) quick-disconnect couplings; slide-lock couplings; single shut-off self-sealing couplings; high-pressure swivel fittings; non-locking couplings to prevent fuel spillage; zero-leak metal-metal fittings for fluid conveyance, and highly resistive unions for electrical resistance and dissipation from fluid lines.