ISO 80369-7 Female Ring Gauge for Male Luer Connector Verification

ISO 80369-7 Female Ring Gauge

The ISO 80369-7 Female Ring Gauge is used to verify the external mating geometry of male Luer connectors. Instead of applying leakage pressure, axial load or stress cracking conditions, this gauge helps the user check whether the male Luer connector fits correctly with a controlled female gauge interface.

This product should not be confused with the ISO 80369-7 Figure C.1, C.3 or C.5 female reference connectors. Those Annex C reference connectors are used in specific performance test configurations, while the Female Ring Gauge is mainly used for dimensional and fit verification based on Luer connector geometry.

For laboratories, medical device manufacturers and QC teams, this gauge is useful before formal functional testing. It helps identify whether a male Luer connector sample has an obvious dimensional or mating issue before using ISO 80369-20 leakage, air leakage or axial load test equipment.

Standard Background and Correct Positioning

ISO 80369-7 includes dimensional requirements for Luer connectors and provides Luer connector dimension figures and tables in Annex B. The Female Ring Gauge is best understood as a practical inspection gauge based on those Luer connector dimensional requirements.

It is different from ISO 80369-7 Annex C reference connectors:

This distinction is important for both purchasing and page SEO. Customers searching for a Female Ring Gauge usually need a dimensional inspection tool, not a complete test system.

What This Female Ring Gauge Checks

The Female Ring Gauge is used to check male Luer connector samples. The working end of the gauge provides a female ring / internal interface. During inspection, the male Luer connector is inserted into or mated with the gauge to evaluate whether the external Luer taper and mating condition are suitable.

Typical verification purposes include:

• Checking the external Luer taper of a male Luer connector
• Confirming basic mating fit before further functional testing
• Supporting incoming inspection of male Luer connector components
• Helping R&D teams compare connector samples during design verification
• Supporting factory QC checks for production batches

This gauge does not replace a complete leakage tester, axial load tester or resistance-to-overriding test setup.

How It Is Used

Typical Use Procedure

1. Confirm that the sample is a male Luer connector.
2. Clean the sample and the Female Ring Gauge working interface before inspection.
3. Insert or mate the male Luer connector with the female ring gauge interface according to the internal inspection procedure.
4. Observe whether the connector fits the gauge as expected.
5. Record the inspection result according to the laboratory or factory QC requirement.
6. After inspection, clean the gauge and store it in a protective case.

Important Use Note

The Female Ring Gauge should be used only for dimensional or fit verification. If the customer needs leakage, sub-atmospheric pressure air leakage, axial load separation, unscrewing separation, stress cracking or resistance-to-overriding testing, the appropriate ISO 80369-20 test apparatus and ISO 80369-7 reference connector should be selected according to the test method.

Technical Features

• Designed for ISO 80369-7 related male Luer connector dimensional and fit verification
• Female ring gauge interface for checking male Luer connector mating geometry
• Suitable for male Luer connector incoming inspection, R&D checking and factory QC
• Precision-machined working interface for repeatable fit verification
• Hardened steel construction can be supplied according to product specification
• HRC58–62 hardness may be stated when confirmed by KINGPO’s product drawing or inspection document
• Compact hand-held structure for convenient laboratory or production inspection
• Available individually or as part of a Luer connector gauge set
• Product datasheet, material information, dimensional confirmation or hardness confirmation can be provided where applicable

Operation and Handling Notes

The Female Ring Gauge is a precision inspection tool and should be handled carefully.

• Confirm the sample is a male Luer connector before use.
• Do not use this gauge as a leakage tester or force test fixture.
• Keep the ring gauge interface clean and free from scratches.
• Do not force an obviously incompatible or damaged connector into the gauge.
• Avoid impact, corrosion or contamination during storage and use.
• Store the gauge in a protective case after inspection.
• Confirm documentation requirements before order placement if the gauge will be used in a regulated laboratory or internal QC system.

Who Needs This Gauge