DURAN WHEATON Screw Cap W239300
The DURAN WHEATON Screw Cap W239300 is a robust black phenolic cap with a white rubber liner, designed for 24-400 threaded sample vials and containers.
This cap provides a tight, leak-proof, and heat-resistant seal, ideal for laboratories requiring secure sample storage and repeated sterilization.
Manufactured by DWK Life Sciences (Germany), it ensures long-lasting performance, excellent sealing integrity, and high resistance to chemicals and temperature variations.
Key Features
Autoclavable Design – Withstands sterilization at temperatures up to 121 °C without deformation or loss of seal integrity.
Black Phenolic Material – Thermoset resin provides excellent strength, dimensional stability, and chemical resistance.
Rubber Liner (SBR) – White styrene-butadiene rubber ensures a secure and airtight seal against vial surfaces.
Standard 24-400 Thread – Compatible with a wide range of laboratory vials, jars, and bottles using 24-400 neck finish.
Reliable Laboratory Grade – Produced by DWK Life Sciences (WHEATON), ensuring precision and consistency in every batch.
Technical Specifications
| Parameter | Details |
|---|---|
| Brand | DURAN / WHEATON – DWK Life Sciences |
| Model / Catalog No. | W239300 |
| Product Type | Screw Cap for Sample Vials |
| Cap Thread Size | 24-400 |
| Material (Cap) | Black Phenolic (Thermoset Resin) |
| Material (Liner) | White Rubber (Styrene-Butadiene Rubber, SBR) |
| Color | Black Cap with White Liner |
| Closure Type | Screw-Type Closure |
| Autoclavable | Yes – up to 121 °C |
| Chemical Resistance | Excellent against aqueous and organic solvents |
| Sterilization Method | Steam Autoclave / Dry-Heat Sterilization |
| Country of Origin | Germany |
| Packaging | Typically 1,000 pcs per case (may vary by supplier) |
Applications
Secure sealing of analytical, biological, and chemical samples
Storage of reagents, buffers, and solvents
Pharmaceutical, biotechnological, and industrial laboratories
Suitable for sterilized and contamination-free laboratory environments
Product Advantages
Provides airtight, leak-proof sealing for safe sample preservation.
Reusable and autoclavable, maintaining consistent performance across sterilization cycles.
Excellent resistance to heat, moisture, and solvents.
Compatible with standard 24-400 threaded vials and containers.
Designed and manufactured to DWK Life Sciences precision standards for reliability and durability.
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