the tools used for online leak sealing are how to inject sealant into the sealing cavity safely and reliably, and how to effectively establish a new sealing structure. It is suitable for most of the media leakage occasions, can withstand high temperature, low temperature, and to make the operation easy. Therefore, it is a special tool specially designed and manufactured for online leak sealing. It includes high pressure injection gun, manual hydraulic pump, high pressure soft hose, gauge, quick couplings, gauge stand joint.