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Bottle Caps

Bottle caps provide an air-tight seal that ensures that a bottle’s contents are leak- and spill-proof, resistant to temperature and that the bottle can be moved. The most ubiquitous style is the threaded screw cap. Caps are available in different sizes and colors and can be specialized for the type of container they sit upon. Popular cap materials include phenolic plastic, polypropylene and PTFE. Bottle caps can be lined with additional material and can be found in solid design or open design, which calls for a septa or insert for complete closure.
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1 – 15 of 434 results
1

Fisherbrand™ Red PTFE-Coated Screw Caps. GL45

Fisherbrand™ Red PTFE-Coated Screw Caps are chemicaly inert and suitable for capping a variety of similarly threaded laboratory containers.

EDGE
2

DWK Life Sciences DURAN™ Original Laboratory GL Bottle Screw Cap, Linerless Lip Seal, PP

Screw cap with reliable plug seal.

EDGE
Description Screw cap
Quantity 10/Pk.
Material Polypropylene
Autoclavable Autoclavable
For Use With (Application) Autoclaving media and reagents; Short term sample and media storage; color coding and identification
3

White Polypropylene Cap with Insert

Top off alpha glass bottles with the Polypropylene Cap withInsert. The white unicap is tamper evident.

EDGE
Product Type Cap
Color White
Screw Material Polypropylene
Closure Color White
Closure Material Polypropylene
4

DWK Life Sciences DURAN™ Multi-Connector Cap, GL 45, Tubing Connectors, for peristaltic tubing, 2, 3, 4, or 5 tubing connectors, Red PBT screw cap

2, 3, 4, or 5 peristaltic tubing connector caps for GL 45 DURAN™ bottles.

EDGE
For Use With (Application) Media supply for small bioreactors; Fed-batch bioreactor; Perfusion circuit for cell culture; Oxygenation/aeration of very small samples; Use in a chemistry micro-reactor
5
Promotions Available

Pyrex™ Polypropylene Screw Caps for Media-lab Bottle

Pyrex™ Polypropylene Screw Caps are ideal for media preparation work.

EDGE
Material Polypropylene
Autoclavable Autoclavable
Closure Type Screw Cap
6
Promotions Available

Kautex™ HDPE, Screw Closure with Tamper-evident Ring (Red)

For Use With: 2/2,5/3,6/8 Jerrycan

EDGE
7

DWK Life Sciences DURAN™ Membrane Venting GL Screw Cap, Blue PP, Welded-in ePTFE Membrane for Pressure Equalisation During Autoclaving

DURAN™ Membrane Venting GL Screw Cap, Blue PP, Welded-in ePTFE Membrane for Pressure Equalisation During Autoclaving allows safe steam sterilisation of media bottles. The 0.2μm ePTFE membrane enables sterile gas exchange and pressure equalisation while keeping bottle contents sterile.

Quantity 5/Pk.
Material Polypropylene,ePTFE
Autoclavable Autoclavable
For Use With (Application) Pressure equalisation during steam sterilisation/autoclaving of media or buffers; Sterile gas exchange for aerobic microbial, shaker and suspension cell cultures; Autoclaving of media and buffers; Short-term storage of sterilised media; Storage of gas generating materials
8

Thermo Scientific™ Nalgene™ Polypropylene Fluid-Transfer Closure

Perform fluid transfer in the lab or field with this 70mm closure compatible with Thermo Scientific™ Nalgene™ Mason Jars (Cat. No. 2115).

9

DWK Life Sciences WHEATON™ White Polypropylene Caps with PTFE-Faced Foamed Polyethylene Liners

WHEATON™ White Polypropylene Caps with PTFE-Faced Foamed Polyethylene Liners seal glass bottles and vials securely. The PTFE-faced foamed PE liner resists chemicals and compresses for a reliable seal, ideal for environmental samples, pharmaceuticals, and diagnostic reagents.

For Use With (Equipment) Glass bottle or vial
Color White
Certifications/Compliance ISO 9001
10

Azlon™ Screw caps for Wide Mouth Vented Wash Bottles

Caps for wide neck wash bottles with dip-tube and patented DripLok™ vapor venting valve that prevents solvent drips.

Quantity 5/Pk.
Closure Material Polypropylene
11

DWK Life Sciences DURAN™ GL 18 Pressure Equalization Set

The DURAN™ GL 18 Pressure Equalization Set is an accessory for the GLS 80 four-port screw cap connection system, enabling sterile pressure equalization via membrane filter and safe closed-system liquid media transfer.

12

DWK Life Sciences DURAN™ Original Laboratory GL Bottle Pouring Ring

Screw cap with reliable plug seal.

EDGE
Description Pouring ring
Quantity 10/Pk.
Material Polypropylene
Autoclavable Autoclavable
For Use With (Application) Autoclaving media and reagents; Short term sample and media storage; color coding and identification
13

DWK Life Sciences DURAN™ High Temperature Screw Cap, PTFE-Coated, Peroxide cured silicone, Red PBT

Screw cap with cap liner sealing and high temperature and chemical resistance.

EDGE
Description Screw cap
Color Red
Closure Liner PTFE/Silicone
Quantity 10/Pk.
Screw Material Polybutylene Terephthalate (PBT) with glass fiber
Material PBT,ETFE,Fiberglass
Liner Material PTFE-coated Silicone
For Use With (Application) Autoclaving of media and reagents; Preparation of media and reagents; Suitable for dry heat sterilization; Pressure applications; Storage of corrosive reagents; Chemical and thermal reactions; Long term / archival storage of samples, media and reagents; Sampling; Transport and shipping
Closure Material PBT with Glass Fiber
14

Thermo Scientific™ Nalgene™ Carboy Replacement Screw Closures and Gaskets
BIOPHARMA

Secure-fitting Thermo Scientific™ Nalgene™ Replacement Screw Closures and Gaskets for Nalgene Carboys provide leakproof† service

EDGE
Color White
15

DWK Life Sciences DURAN™ High Temperature red EFTE Pouring ring, GL 32

Screw cap with cap liner sealing and high temperature and chemical resistance.

EDGE
Description Pouring ring
Color Red
Quantity 10/Pk.
Screw Material ETFE
Material PBT,ETFE,Fiberglass
Autoclavable Autoclavable
Liner Material PTFE-coated Silicone
For Use With (Application) Autoclaving of media and reagents; Preparation of media and reagents; Suitable for dry heat sterilization; Pressure applications; Storage of corrosive reagents; Chemical and thermal reactions; Long term / archival storage of samples, media and reagents; Sampling; Transport and shipping
Closure Material ETFE