The Luer Lock Cap (Small) (JT-041) is molded from polycarbonate, chosen for the part's connection and fluid-path requirements. The material supports the sterilization and compatibility needs of IV infusion sets and fluid-transfer lines. Custom material and color are available from Baixin Bio.
Definition
A luer lock cap (small) is one of the small standardized parts that make a medical fluid path work. Its job is to connect, seal or control flow between two segments of a line, and it is manufactured from device-qualified plastics for reliable single-use performance.
What separates a medical-grade part from a generic fitting is repeatability. Sealing surfaces are smooth and consistent, dimensions hold across the lot, and the resin is selected for fluid compatibility and sterilization.
To put it in context: a disposable fluid-handling device is rarely one molding. It is a chain of small components — connectors, valves, chambers, clamps, caps and tubing — assembled into a single path. Standard interfaces are what let those components come from a catalog and still fit, which is the whole reason this category of part exists.
About This Component
The Luer Lock Cap (Small) is supplied as a single-use molded part for IV infusion sets and fluid-transfer lines. Its interface follows standard conventions so it mates predictably with compatible components, and it is produced in polycarbonate by default, with other medical-grade resins available on request.
Like all Baixin Bio components, it can be customized for material, color, dimensions, packaging and assembly. For a precise specification — exact dimensions, tolerances, sterilization validation, packaging counts and minimum order quantity — request a drawing and samples through the inquiry form.
Key Advantages
The reasons luer lock cap (small) is specified come down to a few concrete advantages:
- Supports OEM and ODM customization of dimensions and packaging
- High-volume manufacturing with stable quality
- Compatibility with common sterilization methods
- Standardized interface that interoperates with compliant luer components
- Leak-resistant seal that holds under normal line pressure
Taken together, these are the reasons device makers standardize on molded medical components rather than improvising connections: the part is predictable, documented and available at volume, which keeps the finished device safe and the production line moving.
Common Applications
In practice, luer lock cap (small) appears wherever a controlled fluid connection is needed:
- Blood and fluid transfer lines
- Hemodialysis circuits
- Enteral feeding sets
- Laboratory fluid handling
What links these applications is risk. Each one moves fluid into or out of a patient or a sample, so a leak, a wrong connection or a contaminated surface has consequences. Standardized single-use components reduce that risk by making every junction predictable and by being discarded rather than reprocessed, which is the safer default for most modern disposable devices.
How to Specify and Choose
A good specification answers a short list of questions up front:
- The sterilization method the finished device will undergo
- Whether the part is single-use or intended for limited reuse
- Color coding or opacity requirements for the assembly
- Packaging format and order volume for the program
- The connection standard the mating part uses (luer slip, luer lock or a specific ISO 80369 series)
Once these are defined, sample qualification against your own process is the last step before volume. If no catalog part matches, these same inputs drive a custom mold.
Industry Standards
Two standards questions dominate this category: connection geometry and sterilization. Connection geometry is increasingly defined by the ISO 80369 series, which separates applications so incompatible lines cannot mate; sterilization is handled by validated EO, gamma or steam autoclave processes matched to the resin and the device.
For polycarbonate components, the practical sterilization options are gamma and ethylene oxide (EO); the choice is confirmed against the finished device and its validated process.
Much of the modern standards work exists to prevent misconnection. Historically a single luer taper served many applications, which made cross-connections physically possible; the ISO 80369 series assign distinct geometries to different uses so incompatible lines simply will not mate. When you specify a connector, identifying the correct series for the application is therefore a safety decision, not just a fit decision.
This page is informational and does not replace device-specific regulatory or validation guidance. Confirm exact standards, biocompatibility and sterilization requirements for your product with your quality team and your supplier.
Frequently Asked Questions
Is luer lock cap (small) available for OEM or ODM projects?
Yes. Baixin Bio manufactures to drawings and samples, customizing material, color, dimensions, packaging and assembly. Send your specification for a quote.
What materials are used?
Depending on the part, medical-grade PC, PP, PVC, ABS, PE or POM is used, selected for the connection method, fluid path and sterilization requirement.
How is it sterilized?
Components are compatible with validated single-use sterilization such as ethylene oxide, gamma irradiation or steam autoclave, depending on the resin. Confirm the method for your device.
Is it compatible with ISO 80369?
Luer interfaces follow small-bore connector conventions. Confirm exact ISO 80369 series compatibility for your application with Baixin Bio before specifying.
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Need Medical Connectors or Components?
Baixin Bio manufactures luer connectors, valves, drip chambers, clamps, caps and tubing, with OEM and ODM customization. Send your drawings or samples for a quote.
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