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™ Screw Cap GL 45 with 2-hose connector

A resusable connector GL 45 cap with two ports for connecting tubing.

Pricing and Availability

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™ Original Laboratory GL Bottle Screw Cap, Linerless Lip Seal, PP

Screw cap with reliable plug seal.

Pricing and Availability
Specifications

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

DWK Life Sciences DURAN™ PURE Premium Screw Cap

High-quality closures developed for the needs of the pharmaceutical and biotech industry

Pricing and Availability
Specifications

Color	Clear
Quantity	5/Pk.
Material	PFA,PTFE,Silicone
Autoclavable	Autoclavable
For Use With (Application)	Manufacturing of pharmaceutical drugs and biotech products; Storage and transport of APIs, bulk drug intermediates, ingredients and media

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™ Original Laboratory GL Bottle Pouring Ring

Screw cap with reliable plug seal.

Pricing and Availability
Specifications

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

Fisherbrand™ Red PTFE-Coated Screw Caps

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

Pricing and Availability

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

Duran™ PTFE Screw Cap

Secure screw cap. DURAN™ PTFE Screw Cap has seal.

Pricing and Availability

DWK Life Sciences DURAN™ Blanking Screw Cap, GL 14, Red PBT, with PTFE Cap Liner (GL 45 Connection Cap System Accessory)

Accessory for 2 or 3 port GL 45 connection cap system

Pricing and Availability

DWK Life Sciences DURAN™ HPLC Screw Cap, 4 Tubing Connectors, Blue, GL 45, PP

Screw cap for pressure and vacuum resistant bottle for HPLC applications.

Pricing and Availability

DWK Life Sciences Tamper Evident Screw Cap, Narrow Mouth, Blue PP, for Soda-Lime Glass Screw-Top Bottles

Tamper evident cap for narrow mouth/high form DIN soda lime glass bottle thread.

Pricing and Availability
Specifications

Description	Tamper-evident screw cap
Quantity	10/Pk.
Material	Polypropylene
Autoclavable	Autoclavable
For Use With (Application)	Storage of samples and reagents; Sample collection; Transport and shipping