What National Lubricating Grease Institute (NLGI) grade is typically used for most marine applications?

The National Lubricating Grease Institute (NLGI) grade that is typically used for most marine applications is grade 2. This grade is favored because it strikes a balance between sufficient viscosity and the ability to flow or be pumped easily, which is essential for marine environments. Grade 2 grease has a consistency that allows it to stay in place during the motions and vibrations common on vessels while also providing effective lubrication for bearings, fittings, and other components that operate under varying pressures and temperatures.

Moreover, grade 2 grease possesses adequate water resistance, which is crucial in marine situations where exposure to water is frequent. This characteristic helps prevent the grease from washing away, ensuring that lubricated parts remain protected against wear and corrosion. In summary, grade 2 is the most versatile and adaptable grease, making it a standard choice across a range of marine applications.