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XT Series


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Connect to outside diameter of 7/8" expanded tubes +/- 0.010", sleeve actuated, 625 psi, Neoprene seals
Product Family : XT Series
Connection Type : External Tubes
Connection Method : Sleeve Actuated
Connects To : 0.875" Tube
Pressure Rating : 625 psi (43.0 bar)
Termination : 1/4" NPT (Male)

The FasTest XT Series sleeve actuated connectors are the preferred method for reliable leak tight connections to expanded tubes.  The XT Series are designed for helium leak testing, run testing, proof testing, pressure decay and other related processes. The sliding sleeve locks when pressurized, and patented sealing makes safe secure instant connections with no operator adjustment.  Pressure-activated safety lock and redundant mating seal sets the standard and are ideal for sophisticated testing techniques such as mass spectrometer and vacuum applications.

  • Fits expanded tubing sizes 3/8", 1/2", 5/8", 3/4" and 7/8"
  • Seals vacuum to 625 psi
  • Reliable leak tight sealing to 10-7 cc/sec
  • Works well with tube size variation or rough cut ends
  • Durable, replaceable seals with no connector disassembly
  • Heat treated steel body assures long life and protection against mechanical damage
  • Positive gripping - No operator adjustments!
Flow Ø 
Dim D
Min - Max
Dim X
Dim Y
Dim Z
1.72 (43.7) 3.33 (84.6) 1/4" NPT 0.28 (7.1) 0.37 - 1.00
(9.4 - 25.4)
0.996 (25.3) 0.867 (22.1)

Note:  Dimensions are in inches (mm). 

Material:            Steel with QPQ
Temperature:  -40° to +250° F






Click on the document below to view or download the appropriate operating, seal replacement and rebuild instructions for the XT Series connectors from FasTest.  Proper use of the connectors will ensure safe operation and maximum connector life.

FasTest currently provides 3D CAD models for our products in .SAT and .STP formats.  Appropriate CAD software is necessary to view and use these files.

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