These adapters convert a 1/16" OD tube made of glass metal or plastic, to a 1/4" OD tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 1/8" OD tube made of glass metal or plastic, to a 1/4" OD tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 1/4" OD tube made of glass metal or plastic, to a 1/4" OD tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 1/4" OD tube made of glass metal or plastic, to a 3/8" OD tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 1/4" OD tube made of glass metal or plastic, to a bored through 3/8" ID tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 3/8" OD tube made of glass metal or plastic, to a 3/8" OD tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 3/8" OD tube made of glass metal or plastic, to a 1/2" OD tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 1/2" OD tube made of glass metal or plastic, to a bored through 5/8" ID tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.

These adapters convert a 3/4" OD tube made of glass metal or plastic, to a 1" OD tube stub for connection to a compression fitting or for welding. Fitting specifications are shown in the second image. A "bored through" designation (BT at the end of a Swagelok tube stub adapter fitting part number) indicates the ID of the tube stub as compared to the OD. A bored through fitting allows a tube of the indicated size to fit through the fitting. Swagelok Ultra-Torr fittings are designed for vacuum system use only and offer reliable vacuum sealing performance up to ultra-high vacuum, even after repeated connects and disconnects. They are constructed of 316 stainless steel and use a knurled nut for easy, finger-tight assembly. No tools are required to assemble or disassemble ultra-torr fittings.