This 3D model is a custom-designed torque wrench adapter specifically created for 38mm Nalgene bottle caps. The adapter should securely click into place on the cap, allowing you to use a standard 1/4-inch torque wrench to apply precise force, helping produce an accurate and reliable seal.

Note:If you want to apply strong force, it is recommended to print this model using a material stronger than standard PLA. Overture PLA+ seemed to be enough. Avoid using basic PLA if you need to exert significant pressure, it will strip the socket.