A complete line of couplings for aerospace, industrial, and military applications.
Products listed here do not represent the entire line of products available from Mid-State Aerospace. Contact us for more information!
Quick-disconnect couplings
Indi-Lok
Indi-lok couplings provide quick connect/disconnect capability with self-sealing action and superior performance during operation and maintenance of fluid systems.

Quick-disconnect couplings
Non-Latching: Automatic
Automatic couplings are recommended for use with today’s advanced precision fluid systems for space flight, aircraft, ground, and undersea applications.
Current applications include:
Quick-disconnect couplings
Non-Latching: Sub-Miniature
Sub-miniature couplings offer proven high performance in a very compact size.
Quick-disconnect couplings
Slide-Lok
Slide-Lok couplings are very similar to Indi-Lok couplings except for the mechanical indicators that are present on the Indi-Lok coupling design.
Quick-disconnect couplings
Single-Shut Off Couplings
Single shut-off couplings are recommended for use on fluid systems requiring the self-sealing valving on one side of connections only.
Quick-disconnect couplings
Thread-Lok
Thread-lok couplings provide today’s aerospace fluid handling systems with quick disconnect capability, self-sealing action and visual/touch indication of a fully coupled position.
Quick-disconnect couplings
Motor Racing QD’s
Motor Racing QD’s are very similar to Indi-Lok couplings except for the mechanical indicators that are present on the Indi-Lok coupling design.
Break-away
Break-Away Valves
Proven lifesavers, Stratoflex breakaway valves separate under crash loads on fluid lines exceeding a predetermined value.
Hydraulics
Hydraulic fuses & flow regulators
Hydraulics engineers at commercial aircraft OEM’s such as Boeing and Airbus have depended on Waterman hydraulic fuses and flow regulators for many years.
A custom part made with a multi-point quality check is just a click away.
