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Ultem (PEI)

A high-heat, high-strength amorphous plastic with strong dielectric properties and low smoke generation.

Example: machined Ultem (PEI)

What is it?

A high-heat, high-strength amorphous plastic with strong dielectric properties and low smoke generation. Common in aircraft interiors, medical sterilization trays, connectors.

Key behavior

Sustained heat resistance, high strength, low smoke generation, and strong dielectric (electrical insulation) properties.

Why choose it

Parts needing both heat resistance and electrical insulation at once — aircraft interiors, medical trays, electrical connectors.

Applications

Aircraft interior components, medical sterilization trays, electrical connectors, manifold blocks.

Machining notes

Machines similarly to PEEK in terms of care needed — a premium material worth careful, deliberate machining practices.

Properties

Density1.27 g/cm3
Typical HardnessRockwell M109-M114
Typical Strength15,000-24,500 PSI tensile (unfilled/glass-filled)
Lead TimeConfirmed per RFQ
FinishingConfirmed per RFQ
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