31 that is formed by cylindrical body 18 cylindrical body 18 is arranged in the first section 7 1 of stuffer box 2 cylindrical body 18 has distributed on its circumference several elongated slots 34 whereby plug channel 31 is connected to the annulus 35 which is formed between the housing 11 and cylindrical body 18 the annulus 35 is connected to suction 12 via the opening 32 in the housing 11 on the side facing yarn plug 13 cylindrical body 18 has a coating 19 which forms a friction surface 14 to guide a yarn plug the coating 19 preferably consists of a ceramic material however metallic hard chrome layers or carbon compounds are also possible thus cylindrical body 18 may also be manufactured from an aluminum material which receives an aluminum oxide coating forming friction surface 14 elongated slots 34 extend at least over a portion of cylindrical body 18 elongated slots 34 extend at least over a portion of cylindrical body 18 the second section 7 2 of the stuffer box is formed by enclosed chamber wall 15 that comprises plug channel 33 plug channel 33 forms at its end plug outlet 6 on the side facing yarn plug 13 enclosed chamber wall 15 comprises contact surface 20 that also carries wear resistant coating 35 formed out of two opposing rollers conveying device 29 is attached directly to stuffer box 2 at plug outlet 6 conveying device 29 guides the yarn plug 13 to a cooling device 30 arranged downstream from conveying device 29.