DURAN Wheaton Screw Cap (W240842)

DURAN Wheaton Screw Cap (W240842) PP White, Open Top

The DURAN Wheaton Screw Cap (W240842) is an autoclavable white polypropylene (PP) open-top closure for E-Z Ex-Traction vials with a 15-425 thread size. It features a PTFE/Silicone liner that provides excellent chemical inertness, airtight sealing, and reliable resealability for critical laboratory applications.

The DURAN Wheaton Screw Cap pairs lightweight, heat-stable polypropylene construction with a dual-layer liner system consisting of a PTFE surface for chemical resistance and a silicone backing for elastic compression. The open-top design allows easy septum insertion or direct sampling access without compromising sterility. It maintains structural integrity under autoclave conditions and repeated laboratory use.

This closure is ideal for chromatography, sample preparation, reagent storage, and biotechnology applications that demand sterile, leak-free performance.

Product Highlights

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

• Material: Polypropylene (PP), White

• Design: Open Top

• Liner: PTFE/Silicone

• Cap Size: 15-425

• Autoclavable: Yes

• Chemical Resistance: Excellent for acids, bases, and solvents

• Seal Integrity: Airtight and resealable

• Part Number: W240842

Applications

• Analytical and pharmaceutical laboratories

• Chromatography and sample extraction

• Chemical and biotechnology research

• Reagent storage and sterile sampling