These waterproof glands are available in different sizes and are designed to effectively seal cable penetrations in various setups, including transoms and boat fitouts. They are also commonly used for trailer wiring and other applications.

The thread size is indicated by their size and they are usually mounted into a correctly tapped thread or through a hole drilled approximately 0.5-1mm larger.

16mm Typically suits 30 series control cables

20mm Typically suits 40 series control cables