Rubber vulcanization jar sealing device

The utility model discloses a rubber vulcanization jar sealing device, including cover and barrel, the barrel be provided with be used for with the flange that the cover is connected, the cover welding has ring type seal, ring type seal stretches into in the flange, outer loop one side of ring type seal is provided with annular seal groove, install annular lip seal circle in the seal groove, inner ring one side of ring type seal is provided with the backpressure and aerifys the hole, the hole intercommunication is aerifyd extremely to the backpressure the seal groove. The utility model discloses can form effective radial seal, guarantee the operating pressure in the rubber vulcanization jar, avoid having improved factor of safety because the sealed energy that does not sternly lead to the fact is extravagant. 本实用新型公开了种橡胶硫化罐密封装置，包括罐盖和筒体，所述筒体设置有用于与所述罐盖连接的法兰；所述罐盖焊接有环形密封圈，所述环形密封圈伸入法兰内；所述环形密封圈的外环侧设置有环形的密封槽，所述密封槽内安装有环形的唇形密封圈；所述环形密封圈的内环侧设置有背压充气孔；所述背压充气孔连通至所述密封槽。本实用新型能够形成有效的径向密封，保证橡胶硫化罐内的工作压力，避免了由于密封不严造成的能源浪费，提高了安全系数