Amerisan Resource Center

H1, H2 and H3 Lubricants: What They Mean and Why Smart Plants Go H1 Everywhere

Written by Bryan Calvetti | Oct 29, 2026, 6:37:02 PM

Why More Food Plants Are Standardizing on H1

On a plant floor, the lines blur fast. A gearbox gets moved. A contractor grabs the closest grease gun. A seal fails over an open conveyor. Knowing what each category actually covers, and where it doesn't, is the first step to keeping lubricants out of your product.

The USDA created these categories, but it stopped registering lubricants in the late 1990s. Today, NSF International runs the registration program and lists approved products in its White Book. That's why your auditor will ask for NSF registration, not "USDA approval."

The FDA doesn't approve lubricants. It sets the formulation rules H1 products must meet under 21 CFR 178.3570. NSF checks products against those rules. Registration is voluntary, but most processors won't let an unregistered lubricant through the door.


H1, H2, H3: what the ratings actually mean

Food-grade lubricants are rated by how likely they are to touch food. The USDA created the H1, H2 and H3 categories, and NSF now runs the registration program. Source

Rating

Where it's used

What's in it

H1

Anywhere incidental food contact is possible

Only ingredients the FDA allows under 21 CFR 178.3570

H2

Only where there's no chance of food contact

No approved ingredient list, but no heavy metals or carcinogens

H3

Cleaning and rust prevention on hooks, trolleys and similar equipment

Edible, soluble oils

Even H1 has a limit. The FDA caps incidental lubricant contamination at 10 parts per million, or 0.001%. H1 is your safety net, not permission to get sloppy with seals and drip points.

The real cost of getting it wrong

The average food recall costs about $10 million in direct costs alone, according to a joint study by the Food Marketing Institute and the Grocery Manufacturers Association. That covers notification, product retrieval, destruction, labor and the root cause investigation. It doesn't count brand damage or lost sales. Source

It can go much higher. A separate GMA survey found 5% of companies took more than $100 million in direct and indirect costs from a single recall. Source

Now compare that with the cost of the fix. Switching a plant to H1 means a few cases of grease and oil, a lubrication survey and some new labels. Even if H1 costs more per tube than what's on the shelf now, the gap is a rounding error next to a single recall.

Lubricant recalls are rare, and that's exactly the trap. Industry experts believe small contamination events happen far more often than they're caught, because nobody ever traces an off-flavor complaint back to a gearbox. Source

Why the best plants go H1 everywhere they can

The smartest move isn't using H1 only where you have to. It's standardizing on H1 across the production floor.

No more mix-ups. When H1 and H2 sit on the same shelf, someone eventually grabs the wrong tube. One lubricant per application removes the guesswork, and consolidating on H1 avoids cross-contamination between grades. Source

No performance trade-off. Older H1 products ran on mineral oil and sometimes wore out faster. Today's synthetic H1 lubricants can match or beat conventional products on heat, oxidation and wear. Source

Safer gray areas. A conveyor running over a food line obviously needs H1. A conveyor running under one may still need it too. Going H1 by default means you never have to argue about the gray areas. Source

Cleaner audits. Your HACCP plan should evaluate every lubrication point as a possible contamination source. A single H1 standard, documented and labeled, is a much easier story to tell an auditor than a chart of exceptions.

How to make the switch

  1. Map every lube point. Walk the floor and list every gearbox, chain, bearing, conveyor and pump. Mark which ones sit over, under or near exposed product.
  2. Check the NSF registration. Only buy lubricants with a current NSF H1 registration. NSF keeps a public list of registered products.
  3. Flush before you fill. Drain the old lubricant, flush with fresh H1 and run the system for at least an hour. Drain again, then fill. Source
  4. Label and color-code. Tag each lube point and each grease gun with the product it takes. Store lubricants in a dedicated, labeled area so nothing gets mixed up.
  5. Watch the seals. H1 is still only approved for incidental contact. Leaking seals and worn gearboxes need fixing, not just better grease.
  6. Write it into your HACCP plan. Document the lubricant, the location and the inspection schedule so your next audit has the paper trail.

Let's take lubricant off your risk list

Amerisan supplies NSF H1 registered lubricants built for food plants, and we'll help you roll them out the right way. Our team can walk your floor, map your lube points and set you up with a clean, documented H1 program your auditor will like.

Want to see how it performs on your line first? Ask us for a sample and put it to work.

Talk to an Amerisan food safety specialist today.

Sources