If you formulate or purchase lubricants for food processing equipment, you’ve likely seen the term NSF HX1 on product labels. But what does it actually mean — and why should it matter to your operation?
What Is a Food-Grade Lubricant Additive?
A food-grade lubricant additive is a chemical compound added to base oils or grease thickeners to enhance lubrication performance in environments where incidental contact with food is possible. Unlike industrial lubricants, food-grade additives must meet strict toxicological and regulatory standards to ensure they pose no health risk if they accidentally contact food products.
Food-grade lubricant additives are used in:
– Conveyor chain lubricants in meat, poultry, and bakery facilities
– Gearbox and bearing greases in food processing machinery
– Anti-wear packages for pumps handling food-contact fluids
– High-temperature oven chain lubricants
What Does NSF HX1 Mean?
NSF HX1 is a certification standard administered by NSF International (formerly the National Sanitation Foundation). An HX1-certified lubricant additive is approved for use in formulations that may have incidental contact with food — meaning the finished lubricant (not just the additive) can be used directly on food processing equipment.
The HX1 designation specifically applies to lubricant additives and components, as opposed to:
– H1 — finished lubricants approved for incidental food contact
– H2 — lubricants used in areas with no possibility of food contact
– H3 — soluble or edible oils used to prevent rust on hooks, trolleys, and equipment
For a finished lubricant to carry an H1 rating, all of its components — including additives — must be NSF HX1 certified. This makes HX1 certification the foundational requirement for any additive entering the food-grade lubricant supply chain.
Why NSF HX1 Matters for Lubricant Formulators
If you’re formulating a food-grade grease or lubricating oil, every ingredient you put in that formulation must be on the NSF approved substances list (or carry HX1 certification). Using a non-certified additive — even one with good toxicological data — means your finished product cannot carry an H1 rating.
This matters because:
1. Regulatory compliance — USDA, FDA 21 CFR, and NSF standards govern food-safe lubrication globally
2. Liability protection — H1/HX1 certification provides documented proof of food safety
3. Market access — major food manufacturers (Tyson, Nestlé, Cargill, etc.) require H1-rated lubricants from their maintenance suppliers
4. Export requirements — EU, Canada, and Australia align with NSF standards for food-grade lubricant certification
What Makes Desilube’s hBN Additives Different?
Desilube Inc produces NSF HX1-certified hexagonal boron nitride (hBN) lubricant and grease additives that are also PTFE-free and PFAS-free. This combination is increasingly important as:
- Regulatory pressure on PTFE (a per- and polyfluoroalkyl substance, or PFAS) grows globally
- Food manufacturers seek to eliminate fluorinated compounds from their facilities
- Performance demands continue to increase (higher loads, higher temperatures, longer relubrication intervals)
Desilube’s hBN-based additives — including Desilube 77, 88, 98F, and 99L/FEL — provide anti-wear, anti-friction, and extreme-pressure performance comparable to PTFE-containing formulations, without the regulatory risk.
Frequently Asked Questions
Q: Can I use any hBN powder in a food-grade lubricant formulation?
A: No. The hBN powder or additive must carry NSF HX1 certification to be used in H1-rated finished lubricants. Not all hBN suppliers have obtained this certification. Desilube’s hBN-based additive packages are NSF HX1 certified.
Q: Is NSF HX1 the same as FDA approval?
A: Not exactly. NSF HX1 certification is based on FDA 21 CFR guidelines (primarily 21 CFR 178.3570) but is administered by NSF International as a third-party certification body. Most food manufacturers and auditors accept NSF H1/HX1 as the standard for food-safe lubrication.
Q: Are PTFE-free food-grade lubricant additives as effective as PTFE-containing ones?
A: Yes, when formulated correctly. Desilube’s hBN-based additives provide comparable anti-wear and anti-friction performance to PTFE, with the added benefit of higher thermal stability (hBN is stable to over 900°C in inert atmospheres vs. PTFE’s 260°C service limit).
Desilube Inc is a US manufacturer of NSF HX1-certified, PTFE-free and PFAS-free hBN lubricant and grease additives. Learn more at desilubeinc.com.