Need help? Contact us at (800) 443-8817

Product Listing



MDC Quick-Disconnects provide a fast and convenient method for coupling and uncoupling metal and glass tubing. They can be welded, brazed, or soldered to flanges, manifolds, chambers, and other vacuum equipment. Quick-Disconnects are ideal for mounting ion gauges, thermocouple gauges, special test ports, and feedthroughs.

  • High vacuum rated to 1x10-8 Torr
  • Temperature rated to 200°C maximum
  • Symmetric, nonrotatable geometries
  • Viton® O-rings
  • Fast coupling
  • Seventeen fractional tube sizes
  • Weldable, Conflat® and ISO compatible designs
Fittings  304ss or brass
O-rings Viton®
Flanges 304ss
Torque Finger-tight
Vacuum Range

1x10-13 Torr

Temperature Range -20°C to 150°C

Components are fabricated from type 304 stainless steel or brass with a surface finish of 32 micro-inches. Assemblies are useable to 10-8 Torr and can be baked to 200°C. The maximum temperature for sustained use is 150°C. Note that repeated bakeout to 200°C can cause deterioration of O-rings and require their periodic replacement.

The compression of a Viton® O-ring can accommodate variations in a tube up to .005 inch. It is essential that all inserted tubes have accurate fractional inch diameters.

Quick-Disconnects have a bore clear through the body and do not restrict a tube from entering as far as desired into a chamber. Care must be taken when loosening the knurled compression seal nut for adjustment while the unit is under vacuum.

These fittings are also supplied mounted on Del-Seal™ CF and Kwik-Flange™ ISO KF for use on flanged ports. Refer to Hybrid Adapters.

For product listing, features and specifications click on links below
 Quick-Disconnects Stainless Steel
 Quick-Disconnects Blankoff, Stainless Steel
 Quick-Disconnects O-rings