A push-to-fit type earplug including a sound attenuating portion and a semi-rigid stem portion having a relatively greater stiffness than the sound attenuating portion is disclosed. The sound attenuating portion and stem portion are made of a closed-cell, slow-recovery foam.本發明揭示一種推合型(push-to-fit)耳塞,其包括消音部及半堅硬柄部,該半堅硬柄部具有比該消音部相對更高的剛度。該消音部與該柄部是由閉孔(closed-cell)、緩慢恢復的發泡體製成。