Flask Closures

Flask Closures

An assortment of flask closures to accommodate a broad range specific of laboratory applications. Typically manufactured from autoclavable plastics such as polyethylene or polypropylene, flask closures are available as sterile or non-sterile, disposable or reusable, vented or unvented, and may be snap-cap or screw-cap in format. Vented flask closures commonly include a 0.2 µm filter membrane to prevent contamination of flask contents. Screw caps with plug seals are available for applications that require a tight seal, such as Thermo Scientific™ Sterilin™ Silicone Stoppers. Protect your valuable cell culture samples with Caps for Thermo Scientific™ Nunclon™ Delta Flasks, offered in two styles — vent/close (solid) and filter.
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Sterilin™ Silicone Stoppers Thermo Scientific™

Guarantee a tight, reliable seal for your glass and plastic flasks. Suitable for use in food, biological and pharmaceutical applications. Thermo Scientific™ Sterilin™ Silicone Stoppers are suitable for use over a wide temperature range: -50° to +200°C.

Nunc™ Sterile Flask Replacement Filter Caps Thermo Scientific™

Allow constant airflow and minimize chance of contamination with Thermo Scientific™ Nunc™ Sterile Flask Replacement Filter Caps.

Caps for Nunclon™ Delta Flasks Thermo Scientific™

Protect your valuable cell culture samples. These caps for Thermo Scientific™ Nunclon™ Delta Flasks are offered in two styles—vent/close (solid) and filter—to meet your application needs.
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