Pultruded Tubing is a fiberglass reinforced thermoset polyester composite in a pultruded tube. GPO3 Pultruded Tubing is flame resistant, track resistant. and it has a UL index rating of 130°C electrical and 160°C mechanical. GPO3 is also strong and durable (with a burst strength of 1200 psi to 1400 psi); yet it is easily chamfered and cut with carbide or diamond saws. Tubing Composites are ideal for numerous tubing applications, and commonly used for a wide variety of fuses, from simple 15 amp fuses to heavy-duty 600 amp fuses. G5/G9 Tubes Glass Reinforced Melamine - natural (grayish brown)
This grade is composed of a continuous glass woven cloth base impregnated with a melamine resin binder. Melamines are the hardest of all laminates, exhibiting good dimensional stability and arc resistance. It is also caustic resistant,G7 Silicone Glass Tubes Composed of a continuous glass woven cloth base impregnated with a silicone resin binder, 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.