Helium sealing performance detection device of non-metal sealing gasket

The utility model relates to a helium sealing performance detection device for a nonmetal sealing gasket, which comprises a first flange, a second flange and a test gasket, and further comprises a helium bottle, a first pipeline, a helium cover and a helium mass spectrometer, one end of the first pipeline is connected with a gas outlet of the helium bottle, and the other end of the first pipeline penetrates through the helium cover and extends into the second flange; the helium mass spectrometer is located outside the helium cover, and a gas inlet of a second pipeline on the helium mass spectrometer is located in the helium cover. According to the scheme provided by the invention, the helium is conveyed into the first pipeline through the helium bottle, then the helium is conveyed into the sealing cavity formed by the first flange and the second flange through the first pipeline, the test gasket is arranged between the first flange and the second flange, and the helium content in the helium cover is measured