Flange Plug Caps for Test Tubes, Polyethylene, Blue — 12/13/16 mm, 1000/Case | Globe Scientific

Flange Plug Caps, Blue Polyethylene, 12/13/16 mm — 1000 Caps per Case

The Globe Scientific Flange Plug Caps deliver a reliable push-in seal for round-bottom and flat-bottom test tubes across three common diameters. Designed for clinical labs and research benches, these blue caps suit specimen storage, culture tube sealing, and routine sample transport where a quick, secure closure speeds workflow.

Technical Specifications

Available Sizes

Applications

• Sealing culture tubes for short-term specimen storage
• Closing serum and plasma sample tubes during transport
• Capping reagent and dilution tubes on the bench
• Securing collection tubes in clinical chemistry workflows
• Color-coding sample sets by tube diameter for sorting
• Capping disposable test tubes in teaching and QC labs

Quality & Procurement

labsupplies.com is an authorized Globe Scientific dealer shipping from US inventory. Each case carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited facilities. Institutional and grant-funded tiered pricing is available — contact us for volume quotes on standing orders.

Frequently Asked Questions

What tube diameters do these flange plug caps fit?

Three sizes are offered to match 12 mm, 13 mm, and 16 mm tube outer diameters. Select the cap size matching your tube specification for a snug push-in seal.

What material are the caps made from?

These caps are molded from flexible polyethylene, which lets the flange compress on insertion and grip the tube wall for a secure friction seal.

How many caps come in each pack?

Caps are supplied 1000 per case at the prices listed. Pricing is quoted per case, and tiered institutional rates apply to larger standing orders.

Are these caps sterile?

No, the flange plug caps are supplied non-sterile. They are intended for general specimen storage, transport, and routine bench applications.