Products List
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Chemglass GL-14, GL-18 Cap with Aperture High Temperature
ChemglassCG-195-H$7.00 - $8.00Open top cap for use with GL screw threads. The cap combined with the CG-197 sealing ring will accommodate tubing of the listed diameter. Cap is made from PPS (polyphenylsiloxan) and will withstand temperatures up to 250°C. GL Cap with... -
Chemglass Removable GL-14, GL-18 Straight & Bent Hose Connectors High Temperature
ChemglassCG-198-H$15.00 - $21.00PFA bent hose connector (straight or bent) with a Viton rubber seal for use with GL-14 or GL-18 glass screw threads. Enables the connection of cooling or vacuum hose by simply screwing either style onto the glass thread instead of forcing tubing over a... -
Chemglass Removable GL-14, GL-18 Straight & Bent Hose Connectors
ChemglassCG-198$5.00 - $15.00Polypropylene hose connections with a Viton rubber seal for use with GL-14 or GL-18 glass screw threads for working temperatures up to max +110°C. Enables the connection of cooling or vacuum hose by simply screwing either style (straight hose... -
Chemglass GL-14, GL-18 Solid Cap or PTFE Individual Seal
ChemglassCG-196$2.00 - $5.00The Solid Cap is made from PBT (thermoplastic polyester) and will withstand temperatures from -45°C to 200ºC. The PTFE Seal is available for purchase separately as well. SKU ITEM CG-196-01 GL-14 Solid Cap... -
USA Lab Straight or Bent Adapters GL-14,GL-18 & GL-25
GL-ADP$4.00 - $8.00GL Connections can be used on distillation head, cold traps, chromatography columns, and much more. Each kit comes with a cap and barb, along with straight adapters or bent adapters. They are available in GL-14,GL-18 & GL-25. The GL-25 are mainly... -
Chemglass GL-14, GL-18 Cap with Aperture
ChemglassCG-195$4.00 - $4.50Open top Chemglass cap with aperture for use from GL-14 and GL-18 screw threads. The cap combined with the CG-197 sealing ring will accommodate tubing of the listed diameter. Cap is made from PBT (thermoplastic polyester) and will withstand temperatures... -
USA Lab GL-14 and GL-18 Solid Cap with PTFE Gasket
USA LabGL-SOLID$2.50 - $3.00GL solid end cap Connections can be used on distillation head, cold traps, chromatography columns, and much more. They are available in GL-14 and GL-18 with a PTFE gasket. For Technical Support, Questions, or Other Issues Please Email or Call... -
USA Lab GL-14 and GL-18 Cap with Aperture
USA LabGL-CAP$2.00 - $3.00GL Connections can be used on distillation head, cold traps, chromatography columns, and much more. They are available in GL-14 and GL-18. For Technical Support, Questions, or Other Issues Please Email or Call Us! -
USA Lab GL-14 and GL-18 Bent and Straight Hose Connector
GL-HOSE$2.00GL Connections can be used on distillation head, cold traps, chromatography columns, and much more. They are available in GL-14 and GL-18. GL-14: 7.5mm ODGL-18: 10mm OD For Technical Support, Questions, or Other Issues Please Email or Call Us!
GL Connectors From USA Lab
Versatile, Airtight Connections for Laboratory Glassware
GL connectors make it easy to connect tubing, adapters, and vessels without leaks or the need for extra fittings. USA Lab carries a complete range of GL connectors, caps, and hose fittings designed for reliable, temperature-resistant performance. From bent and straight hose connectors to PTFE-sealed caps, each part helps you build flexible, airtight lab systems that stand up to heat, vacuum, and solvents.
A Secure and Flexible Setup
Durable Construction
Made from heat-resistant glass or high-temperature plastic for reliable performance, even under continuous use.
PTFE Seals and Gaskets
Provide leak-free connections that resist chemical attack, maintain vacuum integrity, and withstand repeated heating and cooling cycles.
Interchangeable Sizes
Available in GL-14, GL-18, and GL-25 thread sizes for versatile compatibility with condensers, flasks, adapters, and other GL-threaded glassware.
Straight or Bent Hose Connectors
Easily adapt to your preferred hose routing for clean, organized setups, minimizing kinks and maintaining smooth fluid or vapor flow in tight spaces.
Compare GL Connector Options
| Type | Model | Sizes | Features |
|---|---|---|---|
| Caps with Aperture | USA Lab Cap with Aperture Chemglass Cap with Aperture |
GL-14, GL-18 | For hose or adapter insertion, chemical-resistant materials |
| High-Temperature Caps | Chemglass Cap with Aperture, High-Temp | GL-14, GL-18 | Autoclavable, withstands high-heat environments |
| Solid Caps with PTFE Seals | USA Lab Solid Cap with PTFE Gasket Chemglass Solid Cap or PTFE Individual Seal |
GL-14, GL-18 | Creates a secure, sealed closure for unused ports |
| Hose Connectors (Straight & Bent) | USA Lab Bent & Straight Hose Connector Chemglass Removable Hose Connectors |
GL-14, GL-18 | Choose straight or bent; removable and reusable |
| High-Temperature Hose Connectors | Chemglass High Temp Removable Hose Connectors | GL-14, GL-18 | Heat-resistant materials for elevated-temperature setups |
| Adapters | USA Lab Straight or Bent Adapters | GL-14, GL-18, GL-25 | Expands or redirects flow; compatible with glassware and tubing |
User-Friendly Setup
- Simple installation — Hand-tighten to create a secure, airtight fit.
- Reusable components — Designed for repeated use without compromising seal integrity.
- Versatile integration — Mix and match parts within GL size standards.
- Heat and chemical resistant — Built to handle solvents, vapors, and high-temperature applications.
Match the Right Connector to Your Work
- Running heated solvent lines? → Choose high-temperature Chemglass caps and hose connectors.
- Need a vented seal on a flask? → Use a cap with an aperture.
- Closing unused ports? → Go with a PTFE-sealed solid cap.
- Directing tubing around tight spaces? → Pick bent hose connectors for easier routing.
- Expanding connections to other glassware? → Try straight or bent GL-adapters in GL-25 size.
Why Choose USA Lab GL Connectors
- Compatible with various glassware.
- Heat- and chemically resistant materials for lab durability.
- U.S.-based support and fast shipping from USA Lab.
Equipment That Works With Your GL Connectors
Pair your GL connectors with:
- Round-bottom flasks to add secure, threaded connections for distillation or reflux
- Glass reactors to maintain tight seals for gas or liquid flow
- Vacuum systems for PTFE-sealed caps to maintain pressure integrity
