Donaldson

Donaldson Company, Inc. is a filtration manufacturer headquartered in Bloomington, Minnesota, founded in 1915. Its Aerospace and Defense business supplies filtration for fixed wing aircraft, rotorcraft and the manufacturing environments that support them: cabin air and engine inlet filtration, hydraulic and fuel filters, and production air and fluid systems. The group as a whole makes engine and industrial air, oil and liquid filtration products and is a US headquartered company subject to US export controls.

Aerospace and defense products

• Engine inlet barrier filters and inlet particle separation systems for helicopters and other rotorcraft.
• Cabin air filtration for aircraft.
• Hydraulic, fuel and lubrication filters and filter elements for aircraft systems.
• Filtration for aerospace manufacturing, including compressed air, process fluids and dust collection.
• Replacement elements and technical support for operators and MROs.

The aerospace site (donaldsonaerospace-defense.com) now redirects to the aerospace industry section of donaldson.com. The company says its filtration helps operators improve efficiency, reduce maintenance and protect performance critical components on the ground and in the air.

General aviation

Donaldson engine air filters and filter elements are sold through aviation parts distributors for piston and turbine general aviation aircraft. The company's site does not list eligibility by aircraft model, so owners and shops should confirm the correct part number and any approval for a specific type with the distributor or airframe manufacturer.

Company

Donaldson moved its administration and research and development to Bloomington, Minnesota, and lists certifications, supplier information, sustainability reports and an ethics and compliance programme on its site. The Donaldson Foundation supports education focused organisations in the Minneapolis and St. Paul area and in other US cities where the company has operations.

Certifications and suppliers

The company lists its quality and aerospace certifications on a dedicated page and publishes supplier requirements for the parts and materials it buys. Contact routes on the site are organised by industry and region, with the aerospace and defense group reachable through the industry page.

Contact

Description from the company's website (October 2026). Is this your company? Claim this page to add photos and keep your details up to date.