Flat Top Test Tube Stopper Caps for 17 mm Tubes — LDPE, Natural, 1000/Bag (300-4717-02N)
These flat top stopper caps are designed to fit 17 mm test tubes, providing a secure closure for sample containment and storage. Molded from low-density polyethylene (LDPE) in a natural (translucent) finish, they offer flexible, reliable sealing with a snug friction fit. Supplied non-sterile in bulk 1000/Bag packaging, part number 300-4717-02N is well suited to high-throughput labs that need an economical, dependable tube closure solution.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 300-4717-02N |
| Style | Flat Top Stopper Cap |
| Tube Fit | 17 mm test tubes |
| Material | Low-Density Polyethylene (LDPE) |
| Color | Natural (translucent) |
| Sterility | Non-Sterile |
| Pack Size | 1000/Bag |
| Country of Origin | USA |
Applications
- Capping and sealing 17 mm test tubes during sample storage and handling
- Preventing evaporation, contamination, or spillage of aqueous specimens and reagents
- High-throughput clinical and research workflows requiring bulk tube closures
- Temporary or long-term storage of biological and chemical samples in standard test tubes
- General bench use where a low-profile flat top closure is preferred over a snap cap or screw cap
Material & Chemical Resistance
Low-density polyethylene (LDPE) provides good general chemical resistance to aqueous solutions, dilute acids and bases, and many common laboratory buffers, along with the inherent flexibility that allows these caps to seat snugly and release easily from tube rims. LDPE is not recommended for use with chlorinated solvents, aromatic hydrocarbons, or concentrated oxidizing agents, which can cause swelling or permeation. Note that LDPE is not autoclavable; for applications requiring sterile closures, gamma-irradiated or separately sterilized options should be considered.
Quality & Procurement
Made in USA, these Caplugs® Evergreen stopper caps are produced under ISO 9001 quality management from BPA-free, phthalate-free, latex-free LDPE resin. LabSupplies.com is an authorized dealer of Caplugs® Evergreen products and ships from USA inventory, with tiered pricing available for high-volume institutional, clinical, and grant-funded laboratories.
Frequently Asked Questions
Will these caps fit test tubes other than 17 mm?
These stopper caps are sized specifically for 17 mm test tubes. Using them on tubes of a significantly different outer diameter may result in a loose or overly tight fit and is not recommended.
Are these caps autoclavable?
No. LDPE is not rated for autoclave temperatures and can deform under steam sterilization conditions. For sterile applications, consider purchasing pre-sterilized closures or using an alternative sterilization method compatible with polyethylene.
Are the caps supplied sterile?
No — they are supplied non-sterile in bulk 1000/Bag packaging, which is appropriate for the majority of general laboratory and clinical workflows where sterility of the closure is not required.