Bottle Caps
DWK Life Sciences WHEATON™ 38-400 Black Phenolic Cap, PE Cone Liner
WHEATON™ 38-400 Black Phenolic Cap, PE Cone Liner provides a secure closure for WHEATON™ Valumetric™ graduated bottles. Features a polyethylene cone liner for a reliable seal. Available in cases of 576 caps (48 per pack) with a 38-400 thread finish.
DWK Life Sciences DURAN™ Pouring Ring For GLS 80™ Laboratory Bottle
The DURAN™ Pouring Ring For GLS 80™ Laboratory Bottle permits clean, drop-free pouring from DURAN™ GLS 80 wide-mouth laboratory bottles. Made from PTFE for chemical and thermal resistance, it is compatible with the GLS 80 thread system.
DWK Life Sciences DURAN™ GLS 80 Screw Cap with PTFE-Coated Silicone Seal for Laboratory Glass Bottles
The DURAN™ GLS 80 Screw Cap with PTFE-Coated Silicone Seal for Laboratory Glass Bottles is made from white polysulfone (PSU) and features a PTFE-coated silicone seal, providing reliable chemical and thermal resistance for laboratory glass bottle closures.
DWK Life Sciences DURAN™ TILT GL 56 Screw Cap Membrane Vented
The DURAN™ TILT GL 56 Screw Cap Membrane Vented enables safe pressure equalisation during autoclaving via a 0.2‐μm ePTFE membrane, maintaining sterility while allowing bidirectional sterile gas exchange for secure media storage.
DWK Life Sciences KIMBLE™ KONTES™ Valve Stems for Ultra-Ware™ THF-Resistant Filtration/Delivery Four Valve Cap System
KIMBLE™ KONTES™ Valve Stems for Ultra-Ware™ THF-Resistant Filtration/Delivery Four Valve Cap System are CTFE replacement valve stems compatible with the KONTES™ Ultra-Ware THF-resistant four valve recirculation and filtration cap system.
DWK Life Sciences KIMBLE™ Aluminum Seal Caps with PTFE-Faced Silicone Septa
KIMBLE™ Aluminum Seal Caps with PTFE-Faced Silicone Septa feature a medium durometer PTFE/silicone septum that allows for good resealability, core resistance, multiple injections, and easy penetration. Ideal for GC vial sealing applications.
DWK Life Sciences DURAN™ Laboratory Tamper-Evident Screw Caps
DURAN™ Laboratory Tamper-Evident Screw Caps provide secure closure with a tear-away retaining ring that confirms first opening. Available with lip seal or PTFE coated silicone seal. After initial removal, the cap functions as a standard screw cap.
DWK Life Sciences KIMBLE™ Phenolic Caps with Tinfoil Liners
KIMBLE™ Phenolic Caps with Tinfoil Liners are economical black phenolic screw caps ideal for environmental sampling and general purpose use. Good chemical resistance to mild acids, alkalis, alcohols, aqueous solutions, oils and solvents. Not autoclavable.
DWK Life Sciences KIMBLE™ KONTES™ Ultra-Ware™ Three Hole Delivery Caps ETFE Nut Plug 1/4 in.-28
KIMBLE™ KONTES™ Ultra-Ware™ Three Hole Delivery Caps ETFE Nut Plug 1/4 in.-28 is used to seal ports with flat bottom 1/4 in.-28 threads on Ultra-Ware three-hole delivery cap assemblies. Made from ETFE for chemical resistance.
DWK Life Sciences WHEATON™ Black Phenolic Screw Cap With Rubber Liner
WHEATON™ Black Phenolic Screw Cap With Rubber Liner features a nontoxic white styrene-butadiene rubber liner and is autoclavable for easy sterilization. Available in multiple GPI finish sizes for general laboratory use.
DWK Life Sciences WHEATON™ Polypropylene Caps for WHEATON™ Dropping Bottles, Orange
WHEATON™ Polypropylene Caps for WHEATON™ Dropping Bottles - Orange are screw caps made of radiation grade polypropylene, available in a variety of sizes and packaged in cases of 100 or 1000.
DWK Life Sciences DURAN™ PURE Premium Screw Caps
DURAN™ PURE Premium Screw Caps are made from fluoropolymer with PTFE material contact surfaces, are colorant and pigment free, and are suitable for most sterilization methods. Available in DIN thread sizes GL 25 and GL 45.
DWK Life Sciences KIMBLE™ KONTES™ Hi-Temp Cap
KIMBLE™ KONTES™ Hi-Temp Cap is a red PBT screw cap with a PTFE-faced silicone-rubber liner, designed for GL 45 threads and rated to 180°C for high-temperature laboratory applications.
DWK Life Sciences WHEATON™ Polypropylene Caps With Dropper Tips - Brown
Made from polypropylene offering good chemical resistance
DWK Life Sciences WHEATON™ Polypropylene Caps for WHEATON™ Dropping Bottles, Gray
WHEATON™ Polypropylene Caps for WHEATON™ Dropping Bottles - Gray are screw caps made of radiation grade polypropylene, available in a variety of sizes and packaged in cases of 100 or 1000.