Five Neck Reaction Flask Lid
Product Code : JLI-LG-11193
Quick Answer: The Five Neck Reaction Flask Lid is a heavy-wall lid of low expansion borosilicate glass with a flat flange and interchangeable joints, offered in three joint layouts with a 19/26 or 29/32 central neck.
Last updated: 18 October 2026
Key Features
- Five necks with interchangeable joints.
- Flat flange with a ground surface that can be greased or used with an O-ring.
- Heavy-wall, low expansion borosilicate glass.
- Three joint layouts with central, parallel and angled side necks.
Technical Specifications
| Specification | Value |
|---|---|
| Material | Low expansion borosilicate glass, heavy wall |
| Flange | Flat, ground surface |
| First layout | Central 19/26, parallel 19/26, side 5° 24/29, side 10° 19/26, side 15° not applicable |
| Second layout | Central 19/26, parallel 14/23, side 5° 14/23, side 10° 14/23, side 15° 29/32 |
| Third layout | Central 29/32, parallel 14/23, side 5° 14/23, side 10° 14/23, side 15° 29/32 |
How It Is Used
The lid closes a flanged reaction vessel, sealed with grease or an O-ring on the flat ground surface. Its central, parallel and angled side necks let several items of jointed apparatus be fitted at the same time.
Frequently Asked Questions
What joint sizes does the Five Neck Reaction Flask Lid have?
Three layouts are listed. The central neck is 19/26 or 29/32, and the other necks use 14/23, 19/26, 24/29 or 29/32 joints at the parallel, 5°, 10° and 15° positions.
Related Lab Glassware
See the full lab glassware range, or these related reaction flask lids and vessels:
- Two Neck Reaction Flask Lid
- Three Neck Reaction Flask Lid
- Four Neck Reaction Flask Lid
- Reaction Flasks Vessels
For a quotation on the Five Neck Reaction Flask Lid, contact JLab India on +91-8569909696.
