Rexolite® (Cross Linked Polystyrene)

Rexolite® is a unique, light-weight cross-linked polystyrene microwave plastic. It is resistant to chemicals and water absorption and produces negligible outgassing. It has outstanding dielectric properties, high-voltage resistance and is dimensionally stable. Rexolite® often is used for high-frequency circuit substrates, microwave components, and lenses with acoustic, optical and radio-frequency applications. Additional typical applications include antennae, coaxial cable connectors, TV satellite dishes, surveillance equipment and missile-guidance-system housings.

Key Properties
  • Outstanding dielectric properties
  • High-voltage resistance
  • High dimensional stability
  • Very low water absorption
  • Excellent chemical resistance
Standard Shapes and Forms

Sheet: .010” – 6.00” thick

Rod: .0.60” - 9.00” diameter

The range of sizes and shapes are grade specific. Minimums may apply. Please contact us for more information.


Rexolite® 1422

Rexolite® 1422 has good physical and excellent electrical properties, including low loss and stable dielectric constant. The product is well suited for use in microwave lenses and precision components. Rexolite® 1422 meets the requirements of LP-516A (Type E2), formerly MIL-P-77C-E2.