Top 20 Best Selling Cap Plugs Lab Stoppers (2019)




The preassembled caps with septa best suited for your application. The patented Top Hat septa and closure was designed to provide a positive physical lock to assure that preassembled components arrive intact. ... more info

Wheaton Polypropylene Screw Cap with PV Liner is one mil poly-vinyl film bonded to one mil HDPE on a #30 white pulp paper backing. Superior to plain pulp paper because it provides an excellent moisture barrier. General purpose: Suitable for wide range of ... more info


Globe Scientific's polyethylene (PE) flanged plug caps provides exceptional leak-resistance in test tubes, centrifuge tubes and round cuvettes. They feature two flexible flanges that press firmly against the inside wall of the tubes, thereby providing bet ... more info


These seals are special crimp closures with bridges and scorelines in the aluminum seal. This design is an added safety feature, allowing the internal pressure to be released when 3.0 +/-0.5 bar has been exceeded ... more info




Wheaton Polypropylene Screw Cap With Foamed Polyethylene Liner. The one piece, three ply coextruded liner consisting of foamed and solid low density polyethylene (LDPE). The foam core is sandwiched with solid clear polyethylene (PE). General Purpose: Broa ... more info



0.5, 1.5, and 2.0ml screw cap tubes molded from high precision mold and high purity resin. Screw caps deliver leak-proof seal for all types of contents, ideal for life science reagent or solution. All vials are available in skirted and conical interiors t ... more info

The caps seal very well and snap into place over the PCR tubes and Plates (The strip caps work interchangeably with the tube strips and the plates). The 8-Strip PCR Tube Caps are also quite easy to take back off without liquid splashing back up causing cr ... more info



Metal caps offer the widest range of temperature tolerances and are very resistant to fracture from impact. Metal caps are great for industrial and food applications. Sturdy and unbreakable with the widest range of temperature tolerances. Metal caps with ... more info


PTFE/silicone septa. PTFE/silicone resists coring and provides great resealability. PTFE/silicone material. 20mm Neck finish. Measures 20mm diameter by 0.060 thick. ... more info


Accessory for anaerobic tube. Aluminum seal. 20mm diameter. ... more info

The patented Top Hat septa and closure was designed to provide a positive physical lock to assure that preassembled components arrive intact. ... more info




Green thermoset F217 and PTFE lined caps are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures. The color green easily identifies the PTFE liner system. Foam backed PTFE PTFE lin ... more info

Polypropylene caps are known for good impact strength, cost effectiveness and pliability. They can be remelted after they are formed. These polypropylene caps have excellent sealing characteristics and offer good chemical resistance including acids, alcoh ... more info


This polypropylene non-looped screw cap with O ring is compatible with all Axygen scientific screw top microcentrifuge tubes, including both skirted and non-skirted variations of the 0.5mL, 1.5mL, and 2mL microcentrifuge tubes. The O-ring closure is formu ... more info


These caps are known for providing the widest range of chemical compatibility and for being the most temperature tolerant of plastic closures. They also provide the most consistent adherence to close dimensional tolerances. Ideal for pharmaceutical applic ... more info

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