< Topic >Simpler at the time of designing it is and cost in order to produce is cheaper, it retains two materials, at least, mixes, and offer the piston which makes that the device in order to discharge is offered possible.SolutionsThe aforementioned sealing up element lining up vis-a-vis the aforementioned piston, inside being allotted, in order the part (7b) and around outer circle of the aforementioned piston in ring condition to engage on the inside surface of the extending being present and the aforementioned container, distribution facilities outside being done, the ring part (7a) includes the container essentially possessing the inside surface of cylinder condition (1), the sealing up element in order sliding possibly to seal up (7,7a-b) the piston which it possesses in regard to (4). When the aforementioned piston inside the aforementioned container it is moved unidirectionally, the aforementioned outer part ring part is done, directing to the medial axis of the aforementioned piston, in order to be crooked inside, distribution facilities, when and the aforementioned piston inside the aforementioned container the description above unidirectional it is moved bidirectionally is the direction which is opposite, the aforementioned outer part ring part is done, directing to the inside surface of the aforementioned container, in order to be crooked outside, distribution facilities. At least the first ring condition groove, on first side of the aforementioned sealing up element in ring condition as for the extending being present and the aforementioned groove, distribution facilities is done between the aforementioned inside part and the aforementioned outer part ring part of the aforementioned sealing up element.< Selective figure >Figure 1a and figure 1b【課題】デザインにおいてより単純であり及び製造するためのコストがより安い、少なくとも2つの材料を、保存し、混合し、及び排出するための装置を提供することを可能にするピストンを提供すること。【解決手段】本質的にシリンダ状の内側表面を有する容器(1)を、摺動可能に密封するための密封要素(7,7a-b)を有するピストン(4)に関し、前記密封要素は、前記ピストンに対して整列して配される内側部分(7b)及び前記ピストンの外周の周りにリ
