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Flask Closures

Flask Closures

Each with its own specific application and fit, a variety of closures are available for use with flasks. Most common flask closures include screw caps and snap caps. Flask closures are typically manufactured from autoclavable plastics such as polyethylene or polypropylene. A wide range of flask closure types are available to accommodate a broad range of laboratory applications and flask varieties, including closures that are sterile or non-sterile, disposable or reusable, and vented or unvented. Vented flask closures commonly include a 0.2 µm filter membrane to prevent contamination of flask contents. For applications that require a tight seal, screw caps with plug seals are available.
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1 – 15 of 119 results
1

Corning™ PYREX™ GL45 Screw Cap with Plug Seal
BIOPHARMA GSA_VA GREENER_CHOICE

Nonsterile, reusable caps

EDGE
Disposable Reusable
Product Type Cap
For Use With (Equipment) Graduated Erlenmeyer flasks and media bottles
Thread Size GL 45
Autoclavable Autoclavable
Sterility Non-sterile
2

Fisherbrand™ Flask Covers
SDP

Cut down on evaporation.

EDGE
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
3

Corning™ 33mm Caps
BIOPHARMA GREENER_CHOICE

Solid or vented

EDGE
4

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.

EDGE
No. per Case 100
Closure Color White
Closure Type Filter
Sterility Sterile
5

Corning™ PYREX™ Polyethylene Snap Caps for Volumetric Flasks
GSA_VA GREENER_CHOICE

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
6

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

EDGE
7

Corning™ PYREX™ Polypropylene Flask Closures
GSA_VA

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
8

Corning™ Sterile Disposable Spinner Flask Vent Cap
BIOPHARMA GSA_VA GREENER_CHOICE

Designed to fit Corning 500mL, 1L and 3L disposable spinner flasks.

EDGE
9

DWK Life Sciences Kimble™ Kimax™ Polyethylene Snap Caps
SDP

Snap cap tight fit prevents leakage or evaporation

Product Type Cap, Snap
Closure Color Yellow
Closure Material Polyethylene
10

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

EDGE
Disposable Single-use
Product Type Cap, Filling
Closure Color Orange
Sterility Sterile
Closure Material HDPE
Diameter (Metric) Outer Neck 3.3 cm
11

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

12

PYREX™ Polypropylene Caps for Erlenmeyer Flasks
BIOPHARMA GSA_VA GREENER_CHOICE

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
13

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
14

Corning™ Reusable Gas Venting Cap for Vertical Sidearm Flasks

Used to provide gases into larger spinner flasks with vertical sidearms during cell culture

15

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