Fluid end assembly with good sealing performance

The utility model discloses a fluid end assembly with good sealing performance, which comprises a device body, one side of the device body is communicated with a connecting pipe, the top end of the device body is fixedly provided with a mounting piece, the surface of the device body is provided with a groove, one side of the device body is communicated with an output pipe, and one end of the output pipe is integrally provided with a bottom plate. A mounting plate is fixedly mounted at the other end of the output pipe, an adaptive hole is formed in the surface of the mounting plate, one end of the output pipe is detachably sleeved with a conveying pipe, and an inner pipe is integrally formed on the side, close to the output pipe, of the conveying pipe. According to the scheme, the conveying pipe, the inner pipe, the rubber ring and the concave clamping plate are arranged and matched with one another, so that the interior between the conveying pipe and the output pipe can be preliminarily sealed through the rub