Unfilled, glass-filled and aerospace-grade polyetherimide — stocked for sterilizable medical, aerospace interior, and high-temperature electrical applications.

Polyetherimide (PEI), often known by the Ultem trade name, is the go-to amorphous high-performance thermoplastic for applications that demand sterilizability, dimensional stability, and inherent flame resistance. It holds tight tolerances at elevated temperature, resists repeated autoclave and gamma sterilization, and meets stringent flame-smoke-toxicity (FST) requirements. Florida Performance Polymers stocks PEI from sample quantities to full-container loads, in a range of grades, including:

• Standard PEI (unfilled) — sterilizable medical devices and electrical insulation

• 30% glass-filled PEI — structural parts needing added stiffness and dimensional stability

• Aerospace-grade PEI — FAA-regulated interior parts meeting FST standards

• Reinforced PEI blends (PEI/PC, PEI/siloxane) — specialized and FST aerospace applications

Whether your application is a reusable surgical tray that must survive hundreds of autoclave cycles, an aircraft interior part that has to meet FST limits, or a high-temperature connector that needs dimensional stability under load, we help you match the right PEI grade and documentation before you commit to tooling. PEI commonly serves:

• Aerospace interiors: air ducts, seat-back components, and lavatory parts that must meet FST (flame, smoke, toxicity) standards

• Reusable medical devices: surgical instrument trays, sterilization cases, and instrument handles — autoclave- and gamma-stable

• Electrical: high-temperature connectors, semiconductor test fixtures, and circuit-board components

• Food service: high-temperature food-contact applications

Tell us your sterilization method, flame/FST requirement, filler, and any aerospace lot-traceability need, and we'll match the grade and quote. We can arrange grade and compliance testing through qualified labs and provide producer documentation — from 25 kg evaluation quantities to full production loads.