Description
Cone with extension DURAN (Form G) NS 19/26 is a precision-ground laboratory glass joint with an extended tube for modular chemical apparatus. This Form G cone is produced from borosilicate glass 3.3, combining chemical durability, low thermal expansion, and mechanical strength for everyday laboratory use. The joint size is NS 19/26, with a tube diameter of 17 mm, a wall thickness of 1,8 mm, and an overall length of 135 mm, making it suitable for mid-size distillation, reaction, and vacuum glassware configurations. Net weight is 0,026 kg per piece. Supplied as a single unit, the extended cone supports standardized Normschliff connections and helps achieve leak-resistant, interchangeable fittings in DURAN-compatible systems. Manufactured by Rettberg, the component is intended for research, analytical, and teaching laboratories that rely on reproducible ground-joint geometry. Its borosilicate construction and defined dimensions aid dimensional stability during thermal cycling and routine assembly work, providing a practical building block for custom glass setups requiring an NS 19/26 cone with extension.
Key features
- Pack size: 1 pc
- Joint size: NS 19/26
- Material: Borosilicate glass 3.3
- Tube diameter: 17 mm
- Length: 135 mm
- Wall thickness: 1,8 mm
- Technical Information Sheet:
