J30JM1-9ZKSGlass Sintered Sealed Welded Rectangular ConnectorThe volume is the same as the standard J30J, and the same model can be interchanged. The socket is made with a special processing technique, high-temperature glass sintering, strong sealing performance, with a gas leakage rate of 1*10-9 Pa.m3/S, commonly used in spaces with limited space and numerous wiring connections.