A 3/8-inch internal passage is 9.525 mm. Confirm that the product uses this measurement for ID, then check the separate mounting-hole and panel-thickness requirements.
A cable grommet provides a local edge interface. It is not a structural wall reinforcement or an absolute barrier to heat, electricity or water. Use components specified for any additional sealing or electrical function.
Choose the compound for the actual exposure. Do not infer food, skin or animal-contact suitability from a general rubber description. Verify the drawing, material documentation and installed fit for the intended application.
