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Flanges & Components > Adapters & Couplings

Quick Connect Couplings

Quick connect couplings are used to seal common-size tubing to vacuum manifolds or chambers. They are ideal for frequently changed vacuum components or for sealing a glass tube to a metal vacuum chamber, as in glass ion gauges.

Quick Connect Couplings Feature:

  • No tools required for inserting / removing tubes.
  • Couplings are sized by the O.D. of the tube they seal.
  • Material - 304 stainless steel body with 303 stainless steel nut.
  • Available in either "thin wall" or "thick wall" construction.
  • Couplings come standard with Buna-N O-rings. Fluorocarbon replacements are available in the Ordering Table below.

NOTE: We do NOT recommend soft soldering for anything but a temporary joint in a rough vacuum environment. Additionally, we recommend using a high quality thread lubricant on all stainless steel threads (sold below).

Care should be taken not to chip, crack or over tighten the compression fitting on glass neck tubes.

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Ordering Table

(Click column headers to sort data)

Flange Selection Guide
With a variety of flanges to choose from, the Flange Selection Guide is designed to help you find one to meet your vacuum requirements. Shop Now!
Can't find the flange you need or want a custom configuration? Please call us at +1 412 387 9200 or email international@lesker.com with your inquiry.