Santoprene & Multi-Fit Test Tube Cap Plugs, 12/13mm and 16mm — 24 Color Options, 1000/Pack
Seal and color-code your sample tubes with Globe Scientific Cap Plugs, push-in closures engineered for vacuum tubes and standard glass or plastic test tubes. Lab teams rely on them for specimen identification, secure transport, and sample integrity during centrifugation and short-term storage.
Santoprene thermoplastic elastomer formats deliver a tight, reusable grip across 12/13mm and 16mm tubes, while multi-fit and high-grip options accommodate mixed-diameter racks. Eight color choices support fast visual sorting at the bench.
Technical Specifications
| Product Type | Push-in Cap Plug / Tube Closure |
|---|---|
| Volume/Size | 11mm, 12/13mm, 16mm; multi-fit for 10/12/13/16mm tubes |
| Material | Santoprene TPE (113150/113151); plug-grade polymer (multi-fit, high-grip, natural) |
| Closure/Cap | Push-in plug style |
| Graduation | Not applicable |
| Sterility | Non-sterile |
| Pack Size | Santoprene: 1000/Pack; multi-fit, high-grip, and natural: per pack as listed |
Available Options
| Option | SKU | Price |
|---|---|---|
| 16mm High Grip, White — Bag of 1000 | 116132 | $65.90 |
| 16mm Santoprene, Yellow — Bag of 1000 | 113151Y | $287.40 |
| 16mm Santoprene, White — Bag of 1000 | 113151W | $287.40 |
| 16mm Santoprene, Red — Bag of 1000 | 113151R | $287.40 |
| 16mm Santoprene, Lavender — Bag of 1000 | 113151L | $287.40 |
| 16mm Santoprene, Black — Bag of 1000 | 113151K | $287.40 |
| 16mm Santoprene, Green — Bag of 1000 | 113151G | $287.40 |
| 16mm Santoprene, Blue — Bag of 1000 | 113151B | $287.40 |
| 16mm Santoprene, Gray — Bag of 1000 | 113151A | $287.40 |
| 12/13mm Santoprene, Yellow — Bag of 1000 | 113150Y | $286.00 |
| 12/13mm Santoprene, White — Bag of 1000 | 113150W | $286.00 |
| 12/13mm Santoprene, Red — Bag of 1000 | 113150R | $286.00 |
| 12/13mm Santoprene, Lavender — Bag of 1000 | 113150L | $286.00 |
| 12/13mm Santoprene, Black — Bag of 1000 | 113150K | $286.00 |
| 12/13mm Santoprene, Green — Bag of 1000 | 113150G | $286.00 |
| 12/13mm Santoprene, Blue — Bag of 1000 | 113150B | $286.00 |
| 12/13mm Santoprene, Gray — Bag of 1000 | 113150A | $286.00 |
| 11mm, Natural — Bag of 1000 | 112430 | $55.10 |
| Multi-Fit 10-16mm, Yellow — Bag of 1000 | 5529Y | $58.50 |
| Multi-Fit 10-16mm, White — Bag of 1000 | 5529W | $58.50 |
| Multi-Fit 10-16mm, Red — Bag of 1000 | 5529R | $58.50 |
| Multi-Fit 10-16mm, Lavender — Bag of 1000 | 5529L | $58.50 |
| Multi-Fit 10-16mm, Green — Bag of 1000 | 5529G | $58.50 |
| Multi-Fit 10-16mm, Dark Blue — Bag of 1000 | 5529DB | $58.50 |
Applications
- Sealing vacuum blood collection tubes after sample draw
- Color-coding specimens by patient, panel, or processing batch
- Closing 12/13mm and 16mm glass or plastic test tubes for storage
- Securing tubes during transport between collection and lab benches
- Mixed-diameter rack standardization using multi-fit plugs
- Reusable closure for chemistry, hematology, and microbiology workflows
Chemical Resistance
| Reagent Class | Compatibility |
|---|---|
| Aqueous buffers | Excellent |
| Dilute acids | Good |
| Dilute bases | Good |
| Alcohols | Good |
| Acetonitrile | Limited |
| Aromatic solvents | Poor |
| Chlorinated solvents | Poor |
Quality & Procurement
Order through labsupplies.com, an authorized Globe Scientific dealer shipping from US inventory. Each pack carries lot numbers that support traceability for CAP-, CLIA-, and ISO 15189-accredited laboratories. Institutional and grant-funded tiered pricing is available — contact us with volume requirements for a quote.
Frequently Asked Questions
Which tube diameters fit the Santoprene cap plugs?
The 113150 series fits 12/13mm tubes and the 113151 series fits 16mm tubes. For mixed-diameter racks, the 5529 multi-fit plugs accommodate most 10, 12, 13, and 16mm tubes.
Are these cap plugs reusable?
Yes. Santoprene TPE plugs provide a durable, resilient seal that withstands repeated insertion and removal, making them well suited for routine bench reuse on compatible tubes.
Are the cap plugs sterile?
No, all options ship non-sterile. They are intended for general specimen handling, storage, and transport rather than aseptic or implant applications.
What pack quantity do the Santoprene options ship in?
Both the 12/13mm and 16mm Santoprene cap plugs are supplied 1000 per pack. The multi-fit, high-grip, and natural plug options ship per pack at the price listed.