Ultem Sheets - Ultem Rods (UltemTM 1000 - unfilled polyetherimide - PEI) - Ultem Sheets & Ultem Rods offer excellent chemical resistance, high dielectric strength, natural flame resistance, and extremely low smoke generation. Ultem provides exceptionally high mechanical properties and ease of fabrication including bonding make it an easy choice when exceptional performance is required. Ultem is stocked in our USA, Singapore and Taiwan warehouses. Sheets less than .030" thickness are classified as ULTEMTM Film Color: Amber (Natural - Standard), also available in Black