15 mL Centrifuge Tube Screw Caps with Sprockets — HDPE, Red, Non-Sterile, 1000/Bag (300-3022-R20)
Designed for use on 15 mL centrifuge tubes and transport vials, these screw caps feature a sprocket-edge design that provides a secure grip for easy hand-tightening and removal, even with gloved hands. Molded from high-density polyethylene (HDPE), part number 300-3022-R20 delivers reliable chemical resistance and a durable, leak-resistant seal for routine sample storage and transport. Supplied non-sterile in bulk (1000/Bag), the red color enables straightforward tube identification and color-coded workflow organization.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-3022-R20 |
| Application | Transport Vial / 15 mL Centrifuge Tube Screw Cap |
| Design | Sprocket Edge |
| Material | High-Density Polyethylene (HDPE) |
| Color | Red |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Recapping 15 mL centrifuge tubes for sample storage and transport
- Color-coded tube identification in multi-sample or multi-study workflows
- Replacement caps for transport vials in clinical and research settings
- Bulk capping operations where high cap counts are required
- General specimen and reagent containment in laboratory and field collection environments
Material & Chemical Resistance
High-density polyethylene (HDPE) offers broad resistance to aqueous solutions, dilute acids and bases, and many common laboratory reagents, making it a practical choice for general-purpose tube capping. HDPE is more rigid than low-density polyethylene and maintains its shape under normal laboratory handling. Note that HDPE is not recommended for autoclaving and may be affected by strong oxidizing acids, aromatic solvents, and halogenated solvents; confirm compatibility when working with aggressive chemical matrices.
Quality & Procurement
Made in USA, Caplugs® Evergreen screw caps are manufactured under ISO 9001 quality management from BPA-free, phthalate-free, latex-free resin. LabSupplies.com is an authorized dealer and ships from USA inventory, typically same business day for stocking items, with tiered pricing available for institutional and grant-funded laboratories.
Frequently Asked Questions
Are these caps sterile?
No — they are supplied non-sterile in 1000/Bag bulk packaging, suitable for general laboratory and transport applications where sterility is not required.
What is the purpose of the sprocket edge design?
The sprocket (knurled) edge provides additional grip around the circumference of the cap, making it easier to achieve a secure, hand-tight seal — particularly when wearing gloves or handling multiple tubes rapidly.
Can HDPE caps be autoclaved?
HDPE is generally not recommended for autoclaving. If sterile caps are needed, consider a sterilization method compatible with polyethylene, or select a cap product supplied sterile.