Hirschmann Hollow Glass Stoppers NS 12/21

Hirschmann Hollow Glass Stoppers NS 12/21

Description

Hirschmann Hollow Glass Stoppers are designed to provide a secure and airtight seal for laboratory glassware featuring standard ground joints. These stoppers are essential for preventing evaporation, contamination, and the escape of vapours during chemical reactions, sample storage, or distillation processes. Manufactured from high-quality glass, they ensure chemical compatibility and thermal resistance across a variety of laboratory workflows.

Key Features

• Precision-ground joints ensure a leak-proof and reliable seal with compatible glassware.
• Hollow construction reduces overall weight while maintaining structural integrity.
• High chemical resistance suitable for use with aggressive reagents and solvents.
• Standardised NS dimensions for universal compatibility with matching ground-joint apparatus.
• Ergonomic head design allows for easy insertion and removal during experiments.

Applications

• Sealing volumetric flasks and reagent bottles during storage.
• Closing distillation apparatus and reaction vessels in organic synthesis.
• Preventing sample contamination in analytical chemistry procedures.
• Securing volatile substances within standard ground-joint glassware.

Specifications

• Joint Size: NS 12/21
• Material: Borosilicate glass
• Design: Hollow
• Standard: DIN 12252

Disclaimer

Ensure that the ground joint surfaces are clean and free of debris before use to maintain an effective seal. Lubrication may be required for certain vacuum or high-temperature applications.