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Polybutylene Terephthalate (PBT), a semi-crystalline engineering-grade thermoplastic that is part of the polyester family, combines excellent mechanical and electrical properties with robust chemical resistance. It was first introduced by Ticona as Celanex® PBT.

PBT is a white or off-white polyester. Unreinforced grades offer performance typical of a crystalline polymer, and are often used in applications when low moisture absorption, resistance to staining, or resistance to cleaning chemicals is required.

Several formulations, i.e., glass-filled, mineral filled, lubricant filled and variants within these grades such as FDA compliant, flame retardant, impact modified, UV resistant are available to meet specific application demands. Contact an Emco Industrial Plastics representative who can help you choose the correct material to meet the needs of your application.

Brand Names

  • Celanex® PBT
  • Valox®
  • Hydex®
  • Ultradur®
  • Stabilux®
  • Sustadur® PBT
  • Tecadur™ PBT
  • Unilate®
  • Crastin®
  • Uniloy®
  • Xenoy®

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.


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At a Glance

Generic Name
Polybutylene Terephthalate, Unfilled

Available In
Sheet, Rod

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Stock Products Applications Advantages Grades


Sheet 0.25″ – 2.5″ TH Up to 24″ x 48″; CTS White
Rod 0.25″ – 6″ DIA Std. foot lengths; CTS White

Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.


  • Gears, cams, bushings
  • Pump housings, impellers, components
  • Electrical connectors, relays
  • Wear strips
  • Valves, valve bodies
  • Food processing equipment


  • Excellent wear resistance
  • Excellent chemical resistance
  • High heat resistance (reinforced grades only)
  • Low moisture absorption
  • Accepts sublimation printing
  • Excellent machining characteristics
  • Good stain resistance


  • Unfilled
  • Glass filled
  • Carbon filled
  • PTFE filled
  • Mineral filled
  • Alloys/Blends

NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-862-4148.

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