DURAN Wheaton Screw Cap (W240850)

DURAN Wheaton Screw Cap (W240850) PP Black, Open Top

The DURAN Wheaton Screw Cap (W240850) is an autoclavable black polypropylene (PP) open-top closure engineered for E-Z Ex-Traction vials with a 15-425 thread size. It features a PTFE/Silicone liner that ensures chemical resistance, airtight performance, and secure resealability for laboratory, analytical, and pharmaceutical use.

The DURAN Wheaton Screw Cap combines lightweight polypropylene construction with a dual-layer PTFE/Silicone liner for enhanced sealing efficiency. The PTFE face delivers exceptional inertness against solvents, acids, and reagents, while the silicone backing provides elasticity and tight compression for leak-free sealing. The open-top design allows the insertion of septa or syringe access while maintaining sample sterility.

This cap maintains its mechanical strength during autoclaving and repeated handling, making it ideal for demanding applications such as chromatography, reagent storage, and sterile sample transfer.

Product Highlights

• Type: Screw Cap for E-Z Ex-Traction Vials

• Material: Polypropylene (PP), Black

• Design: Open Top

• Liner: PTFE/Silicone

• Cap Size: 15-425

• Autoclavable: Yes

• Chemical Resistance: Excellent against acids, bases, and organic solvents

• Seal Integrity: Airtight, reusable, and leakproof

• Part Number: W240850

Applications

• Analytical and pharmaceutical laboratories

• Chromatography and sample preparation

• Chemical and biotechnology research

• Reagent storage and sterile handling