There are four different materials with different temperature resistance that are used in aluminum extrusion industry.
PBO (p-phenylene-2,6-benzobisoxazole) is a high performance fiber and has outstanding tensile strength. Its characteristics of high flame resistance, high temperature abrasion resistance, and thermal stability have demonstrated to be an excellent choice in conveying hot aluminum profiles.
Nomex is a registered trademark of DuPont in the 1960s and has aromatic backbones. It is durable and rigid but compared to Kevlar, it has poorer strength and lower temperature resistant.
Aramid is an organic fiber first introduced by DuPont (named Kevlar) in 1970s. It has good tensile strength and temperature resistance.
Temperature Resistant inst. (continuous temperature resistance <30 minutes)
600 Celsius (500 Celsius)
500 Celsius (400 Celsius)
280 Celsius (210 Celsius)
Polyester is a sythetic thermoplastic material and changes shape when exposed to heat. It is important to use only polyester material products at places where contact temperature of the product is lower than 180 Celsius.