Understanding NSF Certifications for Mineral Oil: What They Mean and Why They Matter

In industries like food processing, pharmaceuticals, and cosmetics, safety and compliance aren’t just important—they’re non-negotiable. When selecting white mineral oil for use in these highly regulated sectors, NSF certifications are one of the most critical indicators of product safety, purity, and suitability. But what do NSF H1, 3H, and other designations actually mean? And how should they influence your purchasing decisions?

Let’s break it down.

What Is NSF Certification?

NSF International (formerly the National Sanitation Foundation) is an independent organization that sets public health and safety standards for products used in food, water, consumer goods, and industrial processes. An NSF certification means a product has been rigorously tested and complies with strict standards for quality, safety, and performance.
When it comes to white mineral oils, NSF certification confirms the oil is safe for specific types of contact in regulated environments especially where incidental or direct contact with food might occur.

NSF H1: Incidental Food Contact

The NSF H1 certification is for lubricants and white mineral oils that may come into incidental contact with food during processing. These oils are commonly used for lubricating machinery, conveyor belts, pumps, and other equipment in food manufacturing environments.

Why it matters:

Products with H1 certification must meet stringent FDA regulations (21 CFR 178.3570).
Safe for use in facilities with HACCP, FSMA, or GFSI compliance standards.
Essential for avoiding contamination and ensuring regulatory audits go smoothly.

Typical applications:

Machinery lubrication in food processing plants
Bakery ovens and mixers
Bottling and packaging lines

NSF 3H: Direct Food Contact

NSF 3H certification is a step beyond H1. It applies to white mineral oils used as release agents—meaning they can have direct contact with food. Oils with this certification are used to coat surfaces where food is handled, like grills, loaf pans, meat slicers, and cutting boards.

Why it matters:

3H-certified oils must not alter the flavor, odor, or safety of food.
Products must meet the highest purity standards and be completely non-toxic.

Typical applications:

Lubricating loaf pans in commercial bakeries
Coating grills and meat processing equipment
Mold release in confectionery and candy manufacturing

Other Relevant NSF Classifications

NSF HX-1: For ingredients used in H1 lubricants. Indicates a base oil or additive is safe for incidental food contact when used in an H1 formulation.
NSF H2: For lubricants used in food processing areas where no contact with food is expected. Less common with mineral oils but relevant in some industrial applications.

How NSF Certification Impacts Product Selection

When you’re selecting a mineral oil for your operation, NSF certifications provide critical guidance:

H1 oils are a must if there’s even a chance of incidental contact.
3H oils are essential for any surface or equipment that will directly touch food.
Certified products make compliance with FDA, USDA, and international food safety standards more straightforward.
Certifications signal quality and trust, helping your operation avoid costly recalls, contamination risks, or regulatory violations.

STEOIL and NSF-Certified Crystal Plus® Mineral Oils

STEOIL’s Crystal Plus® white mineral oils are manufactured to meet the highest purity and performance standards. Many of our formulations are NSF H1 and/or 3H certified, making them ideal for use in:

Food and beverage processing
Cosmetics and personal care
Pharmaceuticals and nutraceuticals
Packaging, bottling, and more

With STEOIL, you’re not just getting premium mineral oil—you’re getting peace of mind backed by trusted certifications and rigorous quality assurance.

Final Thoughts

NSF certifications aren’t just labels—they’re powerful tools for managing risk, ensuring compliance, and protecting public health. Whether your operation needs incidental-contact lubricants or direct-contact release agents, understanding H1, 3H, and related designations is essential for making informed choices. Ready to explore NSF-certified mineral oil options? Contact the STEOIL team today to learn more about our Crystal Plus® product line and how it can meet your industry’s compliance needs.