We have designed our highly efficient oil vapor activated carbon adsorbers DSS10A-DSS100A as an extension to, or supplement for FST adsorption dryers of the DPS10-DPS100 series. Accordingly, the volume flow rate and connection sizes are optimally matched to these heatless adsorption dryers. They reliably reduce oil content in the compressed air to below 0.003 ppm. Compared to competitors, these economical adsorbers achieve above-average service lives of more than 8,000 hours.