What are the NLGI grades used for grease classification?

The NLGI (National Lubricating Grease Institute) grade refers to the penetration value, in tenths of millimetres.

A cone is placed for 5 seconds on the flattened grease surface which was worked at 25 ° C. Hardness or grade is represented by the NF T60-132 standard.

For more information: an ISO classification for grease has existed for several years. IGOL has invested and focused on sustainable development.

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