Patent ID: 8794677

Claim:
An interchangeable fitting system, comprising: a fitting, the fitting including a male connector and a female connector, the male and female connectors each being monolithic and having a forward portion and an aft portion, the forward portion of the male connector being at least in part received in the forward portion of the female connector and having threads engaged to threads of the forward portion of the female connector, the forward portion of the male connector having a male primary sealing structure including a frusto-conical sealing surface and a male secondary sealing structure including a cylindrical collar portion disposed aft of the male primary sealing structure, the forward portion of the female connector having a female primary sealing structure including a frusto-conical sealing surface complementary to the frusto-conical sealing surface of the male primary sealing structure and a female secondary sealing structure including a sealing element disposed forward of the female primary sealing structure, and the frusto-conical sealing surface of the male primary sealing structure being interfaceable with the frusto-conical sealing surface of the female primary sealing structure, and the collar portion of the male secondary sealing structure being interfaceable with the sealing element of the female secondary sealing structure.