White Flange Plug Caps for 12, 13 & 16 mm Test Tubes — 1000/Case
The Globe Scientific Flange Plug Caps are push-fit polyethylene closures designed to seat firmly inside 12, 13, and 16 mm round-bottom and culture tubes. Labs rely on them for routine specimen storage, sample transport, and sealing diagnostic or culture tubes between processing steps. Their flanged design allows quick one-hand insertion and removal at the bench.
Technical Specifications
| Product Type | Flange Plug Cap (test tube closure) |
| Size Range | 12 mm, 13 mm, 16 mm (tube ID fit) |
| Material | Polyethylene |
| Closure/Cap | Push-fit flange plug |
| Color | White |
| Sterility | Non-sterile |
| Pack Size | 1000 per case |
Available Sizes
| Size | SKU | Price (per case of 1000) |
| 12 mm | 118127W | $36.70 |
| 13 mm | 118240W | $37.00 |
| 16 mm | 116152W | $51.20 |
Applications
- Sealing 12, 13, and 16 mm culture and specimen tubes during storage
- Closing serology and hematology sample tubes prior to transport
- Capping reagent and dilution tubes on the bench
- Securing aliquot tubes for short-term refrigerated holding
- Reclosing tubes between centrifugation or vortex steps
- General-purpose closure for round-bottom and flat-bottom test tubes
Quality & Procurement
labsupplies.com is an authorized Globe Scientific dealer shipping from US inventory. Each case carries a lot number to support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories.
Frequently Asked Questions
What tube diameters do these flange plug caps fit?
Three sizes are offered to match common tube formats: 12 mm, 13 mm, and 16 mm. Select the cap that corresponds to your tube's inner diameter for a snug push-fit seal.
Are these caps sterile?
No. These flange plug caps are supplied non-sterile and are intended for general laboratory and specimen-handling use rather than aseptic applications.
How are the caps packaged?
Each size ships in a case of 1000 caps. Listed prices are per case, and every case includes a lot number for traceability.
What material are the caps made from?
The caps are molded from polyethylene, a flexible, low-cost plastic that forms a reliable push-fit seal and resists most aqueous laboratory solutions.
