A clear amber material, Ultem® (an amorphous, thermoplastic polyetherimide [PEI] resin) is rigid, with high tensile and flexural strength. It also displays stable electrical properties over a wide range of temperatures. Ultem® allows for a unique combination of thermal, mechanical, chemically resistant, and electrical properties, typically only found in higher-cost engineered plastic manifold applications.

Due to its high performance and ease of manufacturing, Ultem® is an excellent choice for manifolds, reusable machined components, electrical insulators, electrical component housings and aircraft instrumentation. It is utilized in a wide cross section of manufacturing industries: medical, pharmaceutical, electronics, semiconductor design, aircraft, aerospace, and automotive.


  • Most costly
  • High tensile strength
  • Good chemical resistance
  • V0 flammability
  • Superior UV stability
  • High dielectric strength
  • Available in dark amber or black typically
  • Continuous service temperature to 330°F
  • More difficult to bond
Ultem Amber Manifold


For fluidic manifolds, Ultem® provides higher performance than polycarbonate, polysulfone, and acrylic manifolds. It has a higher working temperature and better chemical resistance.

Ultem® can be difficult to see through — especially over 1 inch thick. The material (which can be a very dark amber) looks "blacker" the thicker it gets, making channel and internal feature inspection difficult. Ultem® is also the costliest plastic Controlled Fluidics processes, being about two times the cost of acrylic.

Ultem® round, square ,and singled-sided D-channels are all possible to .020”. Multi-layer "common" designs increase costs sharply after two Ultem® layers. Internal pressures to 150 psi are possible, depending on channel size. Large cavities and bonded-in components are available but, the design must be high-heat tolerant.

More about Ultem®

Ultem® combines exceptional strength and rigidity with excellent thermal properties, including outstanding heat resistance under continuous operating temperatures. This material can also be reinforced with glass fiber for increased rigidity.

Ultem®'s General Engineering Characteristics

  • FDA compliant
  • High dielectric strength
  • UV stable
  • Glass transition temperature of 217°C; stable to 200°C
  • Tensile strength: 15,200 psi
  • Modulus of elasticity: 430,000
  • Flexural modulus: 480,000
  • Deflection Temperature: 392°F at 264 psi
  • VO Flammability
  • Superior UV stability