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PhenolicPhenolics are the result of polymerization between layers of paper, canvas, linen, or glass cloth impregnated with synthetic thermosetting resins. Because of its high resistance to flexing, industrial laminates are a popular alternative to acrylic.

Depending upon the intended application of the finished product, you may choose from a glass based material and resin such as; epoxy, melamine, polyimide. or silicone. Physical strength, resiliency, ease, versatility and excellent electrical properties of fabrication, make phenolics useful as support components in a wide range of mechanical and electrical applications. Glass cloth is rated for flammability.


Specified for good physical and electrical properties under dry conditions. Often used to replace asbestos in static applications. Certifies to NEMA G-3 per MIL-I-24768/18 GPG.


Specified for their extremely high strength and high dimensional stability over temperature. FR-4 is a fire-retardant. G-10 glass-epoxy laminate that is used primarily in the printed circuit board industry. Also available copper-clad (both sides), static dissipative (ESD material both sides). Certifies to NEMA FR-4, G-1o per Mil-I-24768/27 GEE-F.


Similar to G10/FR4, with the addition of a higher operating temperature and some improved mechanical strength at elevated temperatures. Certifies to Mil-I-24768/28 GEB–F.


Melamines are the hardest of all laminates, exhibiting good dimensional stability and arc resistance. It is also caustic resistant. G-9 is recommended for humid environments. Melamine phenolics are available in sheet, rod, and tube forms. Certifies to NEMA G-5, G-9 per Mil-I-24768/1 CME.


This grade has excellent heat and arc resistance. It has extremely good dielectric loss properties under dry conditions and good electrical properties under humid conditions, although the percentage of change is high. Certifies to NEMA G-7 per Mil-I-24768117 GSG.


Made of glass fabric with a polyimide resin binder. Capable of continuous long term use at 500°F and higher. Machining characteristics are similar to Grades G10 and G11. P95 complies with the requirements of IEC 60893-3-7-PI GC 301.


GPO-1 (tan) general purpose grade has good thermal electrical and mechanical properties. GPO-3 (red, black, white) offers superior arc and track resistance. Certifies to NEMA GPO-1 per MIL-I-24768/4; NEMA GPO-3 per MIL-I-24768/6 (GPO-3).


Specified for applications where good flame resistance is required in addition to good electrical properties, physical properties, and heat resistance. GPO-2 is a UL recognized product. Produced in two standard colors, red and black. Certifies to NEMA GPO-2 per MIL-I-24768/5.


  • Norplex-Micarta
  • Garolite

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
Phenolics, Glass Reinforced

Available In
Sheet, Rod, Tube

NEMA G-10 per MIL-I-24768/2, NEMA G-10/FR-4 per MIL-I-24768/27, NEMA G-11 per MIL-I-24768/3, NEMA G-3 per MIL-I-24768/18, NEMA G-5 per MIL-I-24768/8, NEMA G-7 per MIL-I-24768/17, MIL-I-24768/28 (Glass Epoxy Laminate, MIL-I-24768/1 (Glass Melamine Laminate, MIL-I-24768/4 (GPO-1, MIL-I-24768/5 (GPO-2) , MIL-I-24768/6 (GPO-3)

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Stock Products


Sheet 0.03″ – 10″ TH Up to 48″ x 96″; CTS Natural, Black
Rod 1/16″ – 6″ DIA Std. foot lengths; CTS Natural, Black
Tube Available

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

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