Quick Answer:The Keck Clips for Joints are polypropylene clips that hold glass joints together, colour-coded by joint size from 14/23 (yellow) to 29/32 (red) and autoclavable, with a maximum operating temperature of 135 °C.
Last updated: 18 October 2026
Key Features
Made from polypropylene (PP) with good chemical resistance.
Autoclavable; maximum operating temperature 135 °C.
Colour-coded by joint size: yellow 14/23, blue 19/26, green 24/29, red 29/32.
Technical Specifications
Specification
Value
Material
Polypropylene (PP)
Maximum operating temperature
135 °C
Joint size 14/23
Yellow
Joint size 19/26
Blue
Joint size 24/29
Green
Joint size 29/32
Red
How It Is Used
Slip the clip over an assembled cone-and-socket joint so that it holds the two parts together and stops the joint from slipping apart during an experiment. The colour shows at a glance which joint size each clip fits.
Frequently Asked Questions
Which joint sizes do the Keck Clips for Joints fit?
They are made for 14/23 (yellow), 19/26 (blue), 24/29 (green) and 29/32 (red) joints.
Can the Keck Clips for Joints be autoclaved?
Yes. The PP clips are autoclavable, with a maximum operating temperature of 135 °C.
Related Lab Glassware
See the full lab glassware range, or these related glass joints and jointed flasks:
