Thomas COVID Supplier BadgeDisplaysResourcesCOVID-19 SUPPLIESGalleryGet a Quote

Rexolite® 1422 is a thermoset cross linked polystyrene copolymer. This material has a combination of good physical and excellent electrical properties including low loss and stable dielectric constant making this material suitable for microwave lenses as well as precision components. Also available in Rexolite® 1422, is copper clad for printed circuit boards.

Brand Names

  • Q200.5

Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.


Do you need Fabrication or Machining for Rexolite 1422?

Contact us today for your fabrication and machining needs!

Request Fabrication/Machining Services
At a Glance

Generic Name
Cross Linked Polystyrene

Available In
Sheet, Rod, Other

LP-516A, type E2, formerly MIL-P-77C-E2

Start Your Quote

Send us a message:

*Required Fields


Technical Information

Stock Products Properties Applications Advantages Grades

Stock Products

Sheet .010 to 6” Std sizes CTS Natural
Rod .030 to 9” Std sizes CTS Natural


Mechanical PropertiesUnitsASTMResults
Flexural Strength psi D790 11,500
IZOD Impact Strength Notched ft-lb/in D256 0.3
Thermal PropertiesUnitsASTMResults
Coefficient of Linear Thermal Expansion (x 10⁻⁵ in./in./°F) 7.0×10⁵
Thermal Conductivity BTU-in/ft²-hr-°F C177 1.01
Volume Resistivity, 50% RH ohm-cm >10¹⁶
Electrical PropertiesUnitsASTMResults
Dielectric Strength. 1/8″ th. V/mil D149 500
Dielectric Constant @1 MHz D150 2.53
Dissipation Factor@1 MHz D150 0.00012
Surface Resistivity @60 Hz ohms/sq D257 >10¹⁴
Optical PropertiesUnitsASTMResults
3mm Transparent Clear Transmittance, Total (%) % D542 159



  • Microwave lenses
  • Microwave circuitry
  • Antennae
  • Radar windows
  • Sonar lenses
  • Coaxial cable connectors
  • Sound transducers
  • Surveillance equipment
  • TV Satellite dishes
  • Missile guidance system housings
  • Nondestructive material testing devices


  • Light weight
  • Radiation resistant
  • Stability
  • Environmentally friendly
  • Low water absorption
  • Machinability
  • Ability to withstand high voltage
  • Chemical resistant


  • Rexolite® 2200
Copyright © 2016 - 2023 Emco Industrial Plastics