ASTM D3198

Test Materials: ASTM D3198 specifies threaded or lug-style closures, typically caps, and compatible containers for testing application and removal torque. The closure materials should match their intended use for accurate results.
Test Process: The test measures the torque required to apply or remove a closure. A calibrated torque measurement device is used under controlled conditions (temperature and humidity) to ensure consistency.
Test Result Interpretation: Results are interpreted based on the torque values for both application and removal. Higher torque indicates a tighter seal, while lower values may indicate easier removal or inadequate sealing, providing insight into the closure’s performance.