Sheldahl (Multek Flexible Circuits)

Sheldahl (now operating as Multek Flexible Circuits, part of Flex Ltd) is a US manufacturer of high-performance flexible circuit materials and specialty polyimide films for aerospace, defence, and space applications, founded in 1955 in Northfield, Minnesota, producing multi-layer interconnect flexible circuits, metallised polyimide (Kapton) films, multi-layer insulation (MLI) thermal blanket materials, flexible heaters, and precision-laminated film structures used in spacecraft, launch vehicles, satellites, and high-reliability electronics. The company's space materials portfolio encompasses aluminised polyimide films for spacecraft thermal control blankets, precision thin-film laminates for flexible circuit interconnects in satellite electronics, and specialty coated films for spacecraft surface thermal management, with flight heritage on numerous NASA, ESA, and commercial satellite programmes over six decades. Sheldahl/Multek serves aerospace primes, satellite manufacturers, defence systems integrators, and electronics manufacturers requiring flight-qualified flexible circuit substrates, thermal control materials, and precision multilayer film products for space-grade applications.