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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 39 results
1

Lenz Laborglasinstrumente™ Flat Flange Lid with Center Neck and Two Angled Side Necks

EDGE
Product Type Flange lid
Material Borosilicate Glass,Duran Glass
For Use With (Application) Reaction vessels
2
Promotions Available

Corning™ PYREX™ GL45 Screw Cap with Plug Seal

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
3
Promotions Available

Corning™ Sterile Disposable Spinner Flask Vent Cap
BIOPHARMA GREENER_CHOICE

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

4

Thermo Scientific™ Caps for Nunclon™ Delta Flasks
BIOPHARMA

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
5
Promotions Available

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

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
6

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
7
Promotions Available

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

8
Promotions Available

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
9
Promotions Available

PYREX™ Polypropylene Caps for Erlenmeyer Flasks
BIOPHARMA 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
10
Promotions Available

Falcon™ Vented Screw Caps for Flasks, Sterile
GREENER_CHOICE

Designed for use with Falcon 25-, 75-, and 175cm2 flasks

Includes 0.2μm Membrane vent
Product Type Cap, Vented
Color Blue
Closure Type Screw Cap
Sterility Sterile
Closure Material Polyethylene
11

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

12

Corning™ Reusable Gas Venting Cap for Vertical Sidearm Flasks

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

13

Corning™ Universal CellSTACK™ Caps
BIOPHARMA GREENER_CHOICE

For filling, venting, and manipulation

14

Corning™ Reusable Gas Venting Cap With PTFE Filter For Vertical Sidearm Flasks

Can be used with larger Spinner Flasks with vertical sidearms to enhance productivity of cell culture

15

Corning™ Direct Overhead Drive 120mm Center Cap Assembly

For use with Corning Reusable spinner flasks

Disposable Reusable
Product Type Center Cap Assembly
No. per Case 1/Cs.
No. per Pack 1/Pk.
Sterility Non-sterile