DURAN Plastic Stopper NS 12/21 292040406

DURAN Plastic Stopper NS 12/21 292040406

The DURAN Plastic Stopper NS 12/21 (Catalog No. 292040406) provides tight, reusable, and chemically resistant sealing for DURAN volumetric flasks and compatible laboratory glassware. It is manufactured from high-quality polyethylene (PE), a flexible and durable material designed to resist most laboratory chemicals and solvents. Moreover, the stopper’s precision-engineered taper ensures a perfect fit, preventing leakage, contamination, or evaporation during use.

The smooth surface allows easy insertion and removal without scratching the glass joint, extending the life of laboratory equipment. In addition, the stopper is lightweight, unbreakable, and reusable, making it both safe and economical for everyday laboratory work. Therefore, it offers a reliable and efficient closure solution for volumetric analysis and chemical preparation.

Because polyethylene is chemically inert, non-reactive, and moisture-resistant, this stopper remains stable even under repeated use in laboratory environments. Consequently, it provides consistent performance and long-term reliability for a wide range of analytical applications. Overall, the DURAN Plastic Stopper NS 12/21 combines durability, precision, and practicality for professional laboratory use.

Specifications

• Brand: DURAN

• Material: Polyethylene (PE)

• Size: NS 12/21

• Type: Standard Plastic Stopper

• Compatibility: DURAN Volumetric Flasks and Laboratory Glassware

• Reusable: Yes

• Chemical Resistance: Excellent

• Autoclavable: No (recommended for ambient or cold applications)

• Catalog Number: 292040406

Key Features

• Made from flexible and durable polyethylene (PE)

• Provides tight, chemical-resistant sealing

• Smooth surface for easy insertion and removal

• Lightweight, unbreakable, and reusable

• Reliable and cost-effective alternative to glass stoppers

Applications

Ideal for sealing DURAN volumetric flasks, reagent bottles, and analytical containers. Furthermore, this stopper is suitable for chemical, pharmaceutical, and educational laboratories that require dependable, reusable sealing solutions. Ultimately, the DURAN Plastic Stopper NS 12/21 ensures safety, durability, and precision for daily laboratory operations.