SEALING DEVICE AND SEALING STRUCTURE

To provide a sealing device which can exactly detect the leakage of a sealed liquid, and can reduce a time and labor for an arrangement of equipment.SOLUTION: A sealing device is arranged between an inside member and an outside member which relatively rotate, and seals a clearance between the inside member and the outside member. The inside member is at least partially formed of a conductive material. The sealing device comprises: an attachment part attached to the outside member; a circular disc-shaped lip arranged inside the attachment part in a radial direction, and extending toward the inside member; an elastic material-made elastic ring arranged between the lip and the inside member, and interference-fit with the inside member; at least two electrodes arranged at an internal peripheral face of the elastic ring; a measuring instrument arranged at the elastic ring, and measuring an electricity conductive state between the electrodes; and a radio transmitter arranged at the elastic ring, and repeatedly or continuously transmitting a signal indicating a measurement result of the measuring instrument.SELECTED DRAWING: Figure 1 【課題】被密封液体の漏れをより正確に検知することができ、設備の配備の手間を削減することができる密封装置を提供する。【解決手段】密封装置は、相対的に回転する内側部材と外側部材との間に配置され、内側部材と外側部材との間の間隙を封止する。内側部材は少なくとも部分的に導電材料から形成されている。密封装置は、外側部材に取り付けられる取付け部と、取付け部の径方向内側に配置されており、内側部材に向けて延びる円環状のリップと、リップと内側部材の間に配置されて、内側部材が締まり嵌めされた弾性材料製の弾性リングと、弾性リングの内周面に配置された少なくとも２つの電極と、弾性リングに配置され、電極の間の電気伝導状態を測定する測定器と、弾性リングに配置され、測定器の測定結果を示す信号を繰り返しまたは連続的に送信する無線送信器を有する。【選択図】図１