Glassware Joint Clips

A glassware joint clip, also known as a Keck clip, snaps over a ground glass joint to hold two pieces of interchangeable glassware securely together under vibration, vacuum, or their own weight.

Joint clips securing ground glass joints on a distillation train

What is a glassware joint clip?

A glassware joint clip, also known as a Keck clip, snaps over a ground glass joint to hold two pieces of interchangeable glassware securely together, stopping them from separating under vibration, vacuum, or their own weight.

SmartLabs stocks stainless steel spring clips and colour-coded plastic clips sized to match standard ground glass joints, keeping your distillation and reflux setups securely connected.

Common uses of glassware joint clips in the lab

Where a joint clip keeps connected glassware securely in place.

  • A metal clip securing a ground glass joint on a round bottom flask

    Securing Joints

    A spring clip snaps tightly over a ground glass joint, holding two pieces of glassware securely connected under vacuum.

  • Colour coded plastic joint clips in yellow, red, green and blue

    Colour-Coded Sizes

    Plastic clips in different colours and sizes make it quick to match the correct clip to each joint size at a glance.

  • Joint clips securing a distillation head to a round bottom flask

    Distillation Setups

    Joint clips secure every ground glass connection along a distillation apparatus, from flask to condenser to receiver.

  • A metal joint clip beside a yellow plastic joint clip

    Stainless vs Plastic

    Stainless steel clips offer durability for frequent use, while plastic clips are lighter and colour-coded by size.