Sigracet 28 AA

Please note that this product has been discontinued and a limited amount of stock remains. Sigracet 28 AA is a non-woven carbon paper gas diffusion media that has no PTFE treatment .  It has a total thickness of 190 um (microns).  SGL AA is a great low-cost alternative to conventional woven carbon paper Gas Diffusion Layer (GDL) and Gas Diffusion Media materials. The Sigracet Carbon Fiber Paper 28 Series is intended to combine the required production robustness and the excellent performance properties.  Stack developers and assemblers are benefiting from the following greatly improved characteristics: Greatly improved homogeneity inter-lot and intra-lot.  The overall variability has been shown to be better than +/- 10% (2 sigma) Greatly improved surface flatness Greatly reduced occurrence of faulty spots on a roll Best performance under various operating conditions