Name: Screw cap, black,
Brand: Marienfeld
SKU: 5459908
Price: 17.70 EUR
Availability: InStock

Screw caps black, GL 18, HDPE with double-acting cone seal, Marienfeld, art. 5459908

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For use with

Dropping bottles 30 ml, amber glass, GL 18, Marienfeld, art. 3665103

Marienfeld Dropping bottles 30 ml,

€71,30

Dropping bottles 50 ml, Marienfeld, art. 3665104

Marienfeld Dropping bottles 50 ml,

€60,43

Dropping bottles 100 ml, Marienfeld, art. 3665105

Marienfeld Dropping bottles 100 ml,

€65,28

Dropping bottles 10 ml, Marienfeld, art. 3665127

Marienfeld Dropping bottles 10 ml,

€59,84

Dropping bottles 5 ml, brown glass GL 18, Marienfeld, art. 3665130

Marienfeld Dropping bottles 5 ml,

€82,49

Dropping bottles 20 ml, brown glass GL 18, Marienfeld, art. 3665132

Marienfeld Dropping bottles 20 ml,

€112,03

Dropping bottles 15 ml, brown glass GL 18, Marienfeld, art. 3665138

Marienfeld Dropping bottles 15 ml,

€83,75

Black screw caps with DIN thread GL 18 are robust laboratory closures manufactured from HDPE and equipped with a double-acting cone seal. The dual-action conical sealing geometry supports a tight fit on matching GL 18 bottle necks, helping to reduce leakage and evaporation during storage and transport of laboratory liquids. The black HDPE construction offers good chemical resistance for many aqueous media and common laboratory solvents used in routine workflows. Supplied in packs of 100 pieces from manufacturer Marienfeld, these caps are intended for general laboratory material applications where a secure, reusable screw closure is required. They suit reagent bottles, sample containers and process vessels that share the GL 18 thread standard. The combination of durable polyethylene and the double-acting cone seal makes them a practical choice for everyday sealing tasks in analytical, preparative and quality-control environments without the need for additional liners or inserts.

This article is part of Screw caps & closures, in Stoppers, caps & closures.