Instant heating type electric water heater leakage-proof sealing envelope

A leakproof sealing sleeve of instant heating electric water heaters, it is an integral full-sealing encapsulating container which can be used as electric heating glass pipe of electric water heaters heated part, it and the water inlet pipes units and water outlet pipes units are connected into a leakproof sealing water cycle integral body of electric heating water supply device. Said container includes bottom plate (2) and sealing shell (1) which are demountable connection, sealing washer (3) is installed between the bottom plate (2) and the sealing shell (1), said sealing shell (1), bottom plate (2) and sealing washer (3) are screw-connected into a water-sealing container through screw-connecting hole (5) by screws.