DURAN Wheaton Screw Cap (W240844)

DURAN Wheaton Screw Cap (W240844) PP White, Open Top

The DURAN Wheaton Screw Cap (W240844) is an autoclavable white polypropylene (PP) open-top closure for E-Z Ex-Traction vials with a 22-400 thread size. It is fitted with a PTFE/Silicone liner, ensuring a tight, chemically inert, and reusable seal for critical laboratory and pharmaceutical use.

The DURAN Wheaton Screw Cap combines the lightweight durability of polypropylene with a dual-layer liner offering the inert surface of PTFE and the elastic compression of silicone. The open-top configuration permits direct septum insertion or sampling via needle while maintaining sterility and air-tightness. Resistant to acids, bases, and solvents, this closure retains its mechanical stability after autoclaving and extended laboratory use.

Product Highlights

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

• Material: Polypropylene (PP), White

• Design: Open Top

• Liner: PTFE/Silicone

• Cap Size: 22-400

• Autoclavable: Yes

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

• Seal Integrity: Airtight and reusable

• Part Number: W240844

Applications

• Analytical and pharmaceutical laboratories

• Chromatography and sample preparation

• Chemical and biotechnology research

• Reagent storage and sterile sampling