DURAN Wheaton Screw Cap (W240840)

DURAN Wheaton Screw Cap (W240840) PP White, Open Top

The DURAN Wheaton Screw Cap (W240840) is a white polypropylene (PP) open-top cap designed for E-Z Ex-Traction vials with a 13-425 thread size. It is autoclavable and fitted with a PTFE/Silicone liner, providing an inert, airtight, and resealable closure suitable for high-precision analytical and pharmaceutical laboratory applications.

The DURAN Wheaton Screw Cap combines lightweight polypropylene construction with the chemical inertness of a PTFE-faced liner and the elasticity of silicone backing. This dual-layer liner ensures reliable sealing even after multiple punctures, while the open-top design allows easy insertion or removal of septa for sampling, reagent access, or sterile transfers.

Engineered for strength and temperature stability, this autoclavable cap maintains integrity under sterilization and solvent exposure, making it ideal for chromatography and long-term sample preservation.

Product Highlights

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

• Material: Polypropylene (PP), White

• Liner: PTFE/Silicone

• Design: Open Top

• Cap Size: 13-425

• Autoclavable: Yes

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

• Seal Integrity: Airtight and reusable

• Part Number: W240840

Applications

• Analytical and pharmaceutical laboratories

• Chromatography and sample preparation

• Chemical and biotechnology research

• Reagent storage and sterile handling