Test tube closures ensure samples do not leak or are contaminated by providing a reliable seal. Securely mix or store small samples with these tops that allow one-handed sealing. Offered in a variety of colors, identification is made easier. Closures come in screw and snug-fit plug designs to fit any test tube opening style. Resistant to high temperatures, the versatile test tube closures can withstand heating applications while the chemical resistance guarantees limitless sample compatibility.

Flanged Plug Caps, Simport Scientific

Supplier: Simport Scientific

This line of polyethylene flanged plug caps provides exceptional leak-resistance in test tubes, centrifuge tubes, and round cuvettes.

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SVL® Caps with Aperture, Chemglass

Supplier: Chemglass

Open top SVL® caps with aperture with sealing rings.

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Polypropylene Screw Caps, Linerless, Kimble Chase

Supplier: DWK Life Sciences (KIMBLE)

Polypropylene caps feature one-piece construction with a seal achieved by a unique interior design.

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SVL® Solid Caps, With PTFE Protected Seals, Chemglass

Supplier: Chemglass

Solid SVL® caps with PTFE faced liner.

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Microcentrifuge Septum Screw Caps Closure for Micrewtubes™ Centrifuge Tubes, Simport

Supplier: Simport Scientific

The screw cap incorporates a pierceable septum made of chemically resistant PTFE on the outside and silicone on the inside, both components being stable over a broad range of temperatures

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Cap for Sample Tubes,Tamper Evident, SIMPORT

Supplier: Simport Scientific

Caps made of PE feature a long skirt and a super-fast thread design allowing them to be removed or sealed with a single turn. Caps are designed with flexible sealing lip which provides leakproof seal.