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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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.

Pricing and Availability
Specifications

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

DWK Life Sciences DURAN™ Open Topped Screw Cap, Central Aperture, Red PBT

PBT screw cap with an open top and high temperature and chemical resistance.

Pricing and Availability
Specifications

Product Type	Open Top Screw Cap
Color	Red
Quantity	10/Pk.
Screw Material	Polybutylene Terephthalate (PBT) with glass fiber
Material	PBT
Autoclavable	Autoclavable
For Use With (Application)	Aseptic reagent delivery and culture sampling using a syringe and needle
Closure Material	PBT with Glass Fiber

DWK Life Sciences DURAN™ GLS 80™ Screw Cap, Blue PP, Linerless Lip Seal

Blue PP GLS 80™ wide-mouth screw cap (plug seal) and drip free, PP pouring ring for GLS 80™ bottles

Pricing and Availability

Kautex™ Screw Closures

Manufactured with polypropylene for excellent chemical resistance. Kautex™ Screw Closures are rugged caps designed for Kautex™ wide mouth HDPE bottles.

Pricing and Availability
Specifications

Includes	Tamper Evident Ring and Conical Seal
Product Type	Screw Cap
Color	Blue

Kautex™ LDPE Screw Caps

LDPE Screw Caps are ideal for use various wide- and narrow-neck bottles.

Pricing and Availability
Specifications

Disposable	Reusable
For Use With (Equipment)	None
Quantity	100 pcs. per bag
Material	LDPE
Certifications/Compliance	Reference Declaration of Compliance
Autoclavable	Not Autoclavable
Fit for Purpose	Certified Quality
Sterility	Non-sterile

DWK Life Sciences DURAN™ Screw Connection Cap, GL 45, with 2 or 3 GL 14 ports, PP

Flexible 2 or 3 port GL 45 screw cap for connection cap system

Pricing and Availability
Specifications

Thread Size (Metric)	GL 45
Quantity	2/Pk.
Material	Polypropylene,PTFE,Silicone
Autoclavable	Autoclavable
For Use With (Application)	Sterile fluid transfer in and out of lab bottles; Gas transfer in and out of lab bottles; Fluid transfer between lab bottles; Supply of reagents to instruments; Bioreactor supply

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.

Pricing and Availability
Specifications

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