Flask Closures

Flask Closures
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Corning™ PYREX™ GL45 Screw Cap with Plug Seal
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Supports traceability with guaranteed access to certificates and proactive change notifications.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Nonsterile, reusable caps

Disposable | Reusable |
---|---|
Product Type | Cap |
For Use With (Equipment) | Graduated Erlenmeyer flasks and media bottles |
Thread Size | GL 45 |
Autoclavable | Autoclavable |
Sterility | Non-sterile |
Fisherbrand™ Flask Covers
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
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Small and/or specialty supplier based on Federal laws and SBA requirements.
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Cut down on evaporation.

Product Type | Cover, Flask |
---|---|
For Use With (Equipment) | Use with flask that takes Rubber stopper sizes, used when solutions are being boiled to cause condensation and refluxing |
Material | Glass |
Closure Material | Flint Glass |
Corning™ 33mm Caps
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Supports traceability with guaranteed access to certificates and proactive change notifications.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Solid or vented

Thermo Scientific™ Nunc™ Sterile Flask Replacement Filter Caps
Allow constant airflow and minimize chance of contamination by using individually packed Thermo Scientific™ Nunc™ Sterile Flask Replacement Filter Caps.

No. per Case | 100 |
---|---|
Closure Color | White |
Closure Type | Filter |
Sterility | Sterile |
Corning™ Universal CellSTACK™ Caps
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Supports traceability with guaranteed access to certificates and proactive change notifications.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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For filling, venting, and manipulation

Corning™ PYREX™ Polypropylene Flask Closures

Designed for culture tubes and flasks with long rimless necks
Disposable | Reusable |
---|---|
Product Type | Cap, Flask |
For Use With (Equipment) | Culture tubes and flasks with long ri mLess necks |
No. per Case | 100/Cs. |
No. per Pack | 50/Pk. |
Autoclavable | Autoclavable |
Sterility | Non-sterile |
Closure Material | Polypropylene |
Corning™ PYREX™ Polyethylene Snap Caps for Volumetric Flasks
Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Economical closure for some volumetric flasks
Disposable | Reusable |
---|---|
Product Type | Cap, Snap |
For Use With (Equipment) | For volumetric flasks |
Color | Blue |
No. per Case | 6/Cs. |
Closure Color | Blue |
Closure Type | Snap Cap |
Closure Material | HDPE |
Corning™ Sterile Disposable Spinner Flask Vent Cap
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Supports traceability with guaranteed access to certificates and proactive change notifications.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Designed to fit Corning 500mL, 1L and 3L disposable spinner flasks.

DWK Life Sciences Kimble™ Kimax™ Polyethylene Snap Caps
Small and Specialty Supplier Partner
Small and/or specialty supplier based on Federal laws and SBA requirements.
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Small and/or specialty supplier based on Federal laws and SBA requirements.
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Snap cap tight fit prevents leakage or evaporation
Product Type | Cap, Snap |
---|---|
Closure Color | Yellow |
Closure Material | Polyethylene |
Corning™ Universal CellSTACK™ Caps
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Supports traceability with guaranteed access to certificates and proactive change notifications.
Learn More

Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
For filling, venting, and manipulation

Disposable | Single-use |
---|---|
Product Type | Cap, Filling |
Closure Color | Orange |
Sterility | Sterile |
Closure Material | HDPE |
Diameter (Metric) Outer Neck | 3.3 cm |
Corning™ Universal CellSTACK™ Caps
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More

Supports traceability with guaranteed access to certificates and proactive change notifications.
Learn More

Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
For filling, venting, and manipulation
PYREX™ Polypropylene Caps for Erlenmeyer Flasks
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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Greener Choice
Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
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Supports traceability with guaranteed access to certificates and proactive change notifications.
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Offers one or more environmental benefits itemized in the U.S. FTC Green Guides.
Learn More
As supplied with Pyrex™ Brand Media/Solution bottles. Choose orange caps for temperatures to 140°C (284°F), red caps for temperatures to 180°C (356°F).
Disposable | Single-use |
---|---|
Product Type | Cap |
Temperature Range (English) | 284°F |
Closure Color | Orange |
Temperature Range (Metric) | 140°C |
Sterility | Sterile |
Closure Material | Polypropylene |
Thermo Scientific™ Caps for Nunclon™ Delta Flasks
Protect your valuable cell culture samples. These caps for Thermo Scientific™ Nunclon™ Delta Flasks are offered in two styles—vent/close, filter—to meet application needs.
Surface Treatment | Nunclon Delta |
---|---|
No. per Case | 100 |
Material | HDPE |
No. per Pack | 1 |
Closure Color | Blue |
Sterility | Sterile |
Corning™ Reusable Gas Venting Cap for Vertical Sidearm Flasks
Used to provide gases into larger spinner flasks with vertical sidearms during cell culture
Thermo Scientific™ Nalgene™ Vented HDPE Closures for Sterile Single Use Erlenmeyer Flasks
Ensure a sterile gas exchange for shaker and suspension cell culture by using Thermo Scientific™ Nalgene™ Vented HDPE Closures for Sterile Single Use Erlenmeyer Flasks.
Color | Blue |
---|---|
No. per Case | 12 |
Material | HDPE |
No. per Pack | 1 |
Closure Type | Vented |
Sterility | Sterile |