Choose Options ULTEM 1000 (Unfilled) Sheet MSRP: Now: $0.00 Was: Overview ULTEM® 1000 is an amorphous polyetherimide (PEI) and is one of the most widely used high-performance materials. It offers exceptional thermal performance and high mechanical strength and stiffness. ULTEM® 1000 is inherently flame... MSRP: Now: $0.00 Was: Choose Options