🔎 Quick Fact
Greases certified under NLGI HPM (High Performance Multiuse) can carry extra letter tags, and each tag signals a specific performance upgrade. Think of them like badges on a toolbox, showing which job that grease is designed to handle. Without the tags, HPM only confirms a strong all-rounder baseline.
📊 Standards and Tests
For example, HPM+WR (Water Resistance) requires stronger results in water spray-off and washout testing. Similarly, HPM+HL (High Load) means the grease must pass stricter load-carrying tests such as ASTM D2596 (Four-Ball Weld Load). The tagging system avoids guesswork, since every suffix is tied to a measurable performance requirement.
🧩 Where It Fits
In practice, these tags help match grease to demanding conditions in Australian industries. A quarry might prefer HPM+HL for heavy equipment, while a food processor may seek HPM+WR to withstand washdowns. Like reading tyre codes before a long drive, the HPM tag tells you how the grease will behave under stress.
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