PEI Foam

Aerospace grade PEI foam has both high and low temperature resistance and exceptional fire performance properties.

Polyetherimide (PEI) is an aerospace grade thermoplastic. When expanded to produce various densities of foam, it exhibits good mechanical properties and passes the most stringent aerospace fire standards. It is thermoformable, has high heat resistance for autoclave processing, remains ductile at cryogenic temperatures and has excellent radar transparency. It is commonly used in radomes, aircraft interiors and to insulate cryogenic tanks.