Close Menu
Aerospace & Defense

Boost Performance and Control Costs with Precision-Engineered Aerospace Components from The Lee Company

Since the dawn of the Jet Age, The Lee Company has produced components that enhance performance, quality, safety, and reliability in aerospace and defense applications. Learn why Lee components are found in thousands of locations on every aircraft in the sky.

Aerospace & Defense | Our Experience

Taking to the Skies Since 1948

Many companies provide aerospace and defense components, but only The Lee Company combines expertise with unparalleled customer support. As an aerospace system designer, you’re solving challenging, high-stakes problems. Lee Technical Sales Engineers will work with you directly, supplying industry-specific knowledge and experience. We’ll even provide innovative custom solutions to meet your requirements. Perhaps most importantly, all our parts are guaranteed by an industry-leading quality management system (QMS).

The Lee Company has enjoyed decades-long relationships with every tier one designer of hydraulic, fuel, and lubrication systems for aerospace and defense applications. We’ve sustained these relationships due to our long track record of providing the optimal balance of performance, quality, price, and delivery. As a result, each product in our catalogue, from the Lee Plug® — the industry-standard sealing solution since the 1960s — to innovative technology such as the Visco flow restrictor and the laser-drilled safety screen, meets this exacting standard.

Thanks to our first-class engineering support, even our custom products meet The Lee Company’s high standards for performance, quality, price, and delivery – which helps you keep your costs low.

Meanwhile, all components are manufactured under a benchmark QMS and put through extensive qualification and acceptance testing. Finally, our designs have been field-proven in thousands of locations on every type of aircraft, from business jets to military rotorcraft. In short, our engineering solutions help you save time, reduce risk, and lower overall development costs throughout the lifespan of your programme.

Insights & Resources

An Aerospace Heritage Over 70 Years in the Making

Learn about the problems we’ve solved, the solutions we’ve provided, and how our work has convinced top-tier fluid system designers to choose The Lee Company for decades.

Aerospace & Defense | Products

An Encompassing Product Family of Miniaturized Components

How do you guarantee precise performance in critical applications using a part smaller than the tip of a pencil? You start by contacting The Lee Company.

Plugs

Aerospace plugs from The Lee Company are and remain the benchmark product for the industry.

Visit The Lee Company USA to learn more about plugs.

Check Valves

Lee Chek® check valves represent an unmatched combination of size and durability which make them suitable for every aerospace application.

Visit The Lee Company USA to learn more about check valves.

Pressure Relief Valves

Eliminate backflow in aircraft engines with pressure relief valves from The Lee Company.

Visit The Lee Company USA to learn more about pressure relief valves.

Shuttle Valves

Reinforce your landing gear and safety systems with shuttle valves from The Lee Company.

Visit The Lee Company USA to learn more about shuttle valves.

Flow Restrictors

Lee flow restrictors are created with unmatched precision and designed for maximum resistance against contamination and erosion.

Visit The Lee Company USA to learn more about flow restrictors.

Flow Metering Valves

Combine the functionality of check valves and restrictors in a single component with directional flow controls from The Lee Company.

Visit The Lee Company USA to learn more about flow metering valves.

Shut-Off Valves

Lee shut-off valves are known for their miniature size (which helps save weight and space in critical applications), easy installation, and precise, reliable performance.

Visit The Lee Company USA to learn more about shut-off valves.

Solenoid Valves

When you work with The Lee Company, you can equip your aircraft with the most reliable, efficient, and compact solenoid valves on the market.

Visit The Lee Company USA to learn more about solenoid valves.

Nozzles

Obtain the most compact, economical, and reliable nozzles available anywhere when you work with The Lee Company.

Visit The Lee Company USA to learn more about nozzles.

Safety Screens

Safety screens are a vital component of any hydraulic, fuel, lubrication, or pneumatic system in the aerospace and defense industry.

Visit The Lee Company USA to learn more about safety screens.

Additional Products

The Lee Company offers a wide range of products specialized for aerospace and defense.

Visit The Lee Company USA to learn more about additional products for aerospace & defense..

Aerospace & Defense | Applications

Mission Critical Applications in Aerospace Systems

Sealing Solutions

The most reliable technology to seal passages in any manifold or housing under any condition.

Visit The Lee Company USA to learn more about sealing solutions

Flow Metering

Guaranteed performance with proven flow metering solutions for your mission-critical applications.

Visit The Lee Company USA to learn more about flow metering

Flow Targeting & Spray

Accurately direct flow or spray patterns for cooling, lubrication, atomising and coating.

Visit The Lee Company USA to learn more about flow targeting & spray

Pressure Control

Accurate control and reliable pressure protection in systems with varying pressure conditions.

Visit The Lee Company USA to learn more about pressure control

Solenoid Operated Control

Superior reliability and performance in a miniature package for electrically controlled valves.

Visit The Lee Company USA to learn more about solenoid operated control

Filtration

Robust designs for reliable protection against rogue contamination and debris.

Visit The Lee Company USA to learn more about fluid filtration