Aramid (MX)

The information provided on this website is intended as a guide for filter bag applications. SLY, LLC. makes no guarantee about the performance or results you can expect from the application of this information unless provided in writing from our staff.

Aramid Felt (common brand: Nomex®) Normal maximum continuous operating temperature is 375°F. General applications for Aramid felt include: highly abrasive dust applications, electric arc furnaces, high temperature dryers, cupolas, and chemical applications where high temperatures exist. Aramid offers a good resistance to alkalis under most condition. Most mineral oxides cause degradation and partial decomposition. Aramid withstands common organic solvents very well. Some phenolic compounds cause solubility.

Fiber Filter Properties (PDF)
Fiber Filter Chemical Compatibility Chart (PDF)

  • Available Finishes for Aramid Felt: Plain (PL); Singed (SI); Glazed (GL); ST-01 (Oleophobic); ST-04 (Code 9); PTFE membrane (XP); ST-08 (double dip ST-01); ST-09 ; ST-10; ST-11; Fire Retardant (FR); SlyHE (High efficiency). See detail information on finishes here.
  • Available Weights for Aramid Felt: 14 oz./yd2, 16 oz./yd2, 18 oz./yd2

Aramid Felt Common Finishes:

Singed (SIMX) – The felt is singed on the dust cake side for improved cake release. The process involves exposing the surface fibers to an open flame that melts back the loose fiber ends to which dust particles could adhere.

Glazed (GLMX) – This process involves running the felt through two heated rollers to melt back the loose fiber ends improving the cake release. The process can also compress the felt to smooth the surface, further improving the cake release.

SlyTech-01 (ST-01) – Oleophobic -water and oil repellent finish. SlyTech-01 is a complete PTFE bath which provides an excellent cake release finish to each fiber. This finish is cheaper and more durable than a membrane that can be easily scratched.