Disconnect Assemblies (Couplings)


  • Vacuum rating: HV design 1×10-8 Torr
  • Leak rating: <1x10M-9 std. cc/s helium
  • Body, plug, nut, and retaining ring manufactured from 304 stainless steel
  • Seals: Standard – Buna-N O-ring (FKM O-ring available upon request)
  • Limited quantities of brass couplings available upon request


  • Interchangeable with other quick disconnect style fittings
  • Quick disconnects come standard with Buna-N seals (Viton is available)
  • Quickly make and break vacuum seals
  • Designed to accept standard inch tubing O.D.’s
  • Infinitely rotatable, sexless connection to tubing or gauges
  • Reusable seals

*Dimensions are in inches unless otherwise specified

Part IDReference NumberA B C D Wall Thickness Accepts Tube O.D. 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID1000103Reference Number18-QDTN-1.32A 0.38B 0.63C 1.32D 0.63Wall Thickness 0.865Accepts Tube O.D. 0.1873D CADLoginDrawingLoginUnit Price$41.003
Part ID1000104Reference Number25-QDTN-1.32A 0.38B 0.62C 1.32D 0.63Wall Thickness 0.118Accepts Tube O.D. 0.253D CADLoginDrawingLoginUnit Price$41.005
Part ID1000106Reference Number31-QDTN-1.32A 0.5B 0.88C 1.32D 0.63Wall Thickness 0.086Accepts Tube O.D. 0.3123D CADLoginDrawingLoginUnit Price$44.00Contact
Part ID1000108Reference Number38-QDTN-1.32A 0.5B 0.88C 1.32D 0.63Wall Thickness 0.055Accepts Tube O.D. 0.3753D CADLoginDrawingLoginUnit Price$44.001
Part ID1000110Reference Number50-QDTN-1.32A 0.63 B 0.88 C 1.32 D 0.63 Wall Thickness 0.055Accepts Tube O.D. 0.53D CADLoginDrawingLoginUnit Price$48.002
Part ID1000112Reference Number62-QDTN-1.51A 0.75B 1.19C 1.51D 0.75Wall Thickness 0.055Accepts Tube O.D. 0.6253D CADLoginDrawingLoginUnit Price$52.00Contact
Part ID1000114Reference Number75-QDTN-1.63A 0.88 B 1.38 C 1.63 D 0.75Wall Thickness 0.055Accepts Tube O.D. 0.753D CADLoginDrawingLoginUnit Price$54.00Contact
Part ID1000116Reference Number87-QDTN-1.63A 1B 1.37C 1.63D 0.75Wall Thickness 0.055Accepts Tube O.D. 0.883D CADLoginDrawingLoginUnit Price$61.00Contact
Part ID1000118Reference Number100-QDTN-1.88A 1.13B 1.63C 1.88D 0.75Wall Thickness 0.055Accepts Tube O.D. 13D CADLoginDrawingLoginUnit Price$68.0058
Part ID1000120Reference Number112-QDTN-1.88A 1.25B 1.88C 1.88D 0.75Wall Thickness 0.055Accepts Tube O.D. 1.1253D CADLoginDrawingLoginUnit Price$81.00Contact
Part ID1000122Reference Number125-QDTN-2.00A 1.5B 1.88C 2.01D 0.75Wall Thickness 0.118Accepts Tube O.D. 1.253D CADLoginDrawingLoginUnit Price$99.00Contact
Part ID1000124Reference Number138-QDTN-2.13A 1.63B 2C 2.13D 0.88Wall Thickness 0.118Accepts Tube O.D. 1.3753D CADLoginDrawingLoginUnit Price$135.00Contact
Part ID1000126Reference Number150-QDTN-2.25A 1.75B 2.25C 2.25D 0.88Wall Thickness 0.118Accepts Tube O.D. 1.53D CADLoginDrawingLoginUnit Price$152.003
Part ID1000128Reference Number162-QDTN-2.25A 1.88B 2.38C 2.25D 0.88Wall Thickness 0.118Accepts Tube O.D. 1.6253D CADLoginDrawingLoginUnit Price$163.00Contact
Part ID1000130Reference Number200-QDTN-2.30A 2.25B 2.75C 2.26D 0.88Wall Thickness 0.242Accepts Tube O.D. 23D CADLoginDrawingLoginUnit Price$175.0098