Immersible Ultrasonic Transducer can be used together with pulse sweep frequency generator to perform an ultrasonic cleaning. It is internally equipped with high power, durable BLT transducers and hard chrome plating sonic surface on stainless steel housing to provide an ultra-long life feature. It is used to long service life through use of a special steel alloy for the casing and extremely good sonic yield due to use of optimized piezo transducer elements.