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High-Temperature Greases Built for Extreme Conditions up to 350 °C

Heat and harsh chemicals are where ordinary lubricants fail. Many standard greases start breaking down at around 120 °C: they decompose, harden or simply evaporate. Before long, components run dry, bearings seize and production grinds to a halt.
We’ll help you find the high-temperature grease that’s right for your application.

What to Look for in a High-Temperature Grease

Two things tell you most of what you need to know: the base oil and the maximum continuous operating temperature. Most of our high-temperature greases are PFPE-based (perfluoropolyether), developed to handle extreme heat, heavy loads and aggressive chemicals.

  • Stable in continuous operation up to 350 °C
  • Unaffected by steam, solvents, acids and alkalis
  • Minimal evaporation and oxidation, even under constant load
  • Safe to use with plastics, elastomers and metals
  • PFPE grades are non-flammable and radiation-resistant

And because no two applications are alike, we offer dedicated product lines for different temperatures, loads and industries.

Not Running Smoothly?

Get in touch, we will support you!

Phone: +49 9342 9169393
Email: support@neukirchlubrication.de.

Our High-Temperature Greases at a Glance

These four product lines cover everything from −70 °C to +1,000 °C and are among our most requested products.

RESISTENT is built for applications where high temperatures meet aggressive chemicals. FLUOSTAR is the go-to grease for rolling bearings in ovens, dryers and food processing, with selected grades NSF H1 registered. FLUOLOG is designed for precision engineering and electronics. And when continuous temperatures climb above 320 °C, CASTRADEPS high-temperature paste takes over as a reliable dry lubricant up to 1,000 °C.

We also carry a range of specialty products for more unusual applications. Just get in touch and we’ll send you a detailed overview with technical data sheets, along with a sample.

Resistent-Series

High-temperature grease

igh-performance greases for applications exposed to extreme temperatures and aggressive chemicals. The range includes PFPE-based versions for chemically harsh environments and temperatures up to 350 °C, as well as a cost-effective ester-based alternative for up to 200 °C. All versions are non-flammable, fully compatible with polymers and designed for long relubrication intervals.

Temperature range: −60 °C to +350 °C

Typical applications:

  • Rolling and plain bearings
  • Ovens and autoclaves
  • Core pulls and slides
  • Soldering equipment
  • Needle bearings
  • Radiation-resistant and suitable for vacuum applications

Castradeps-Series

High-temperature lubricating paste

A high-temperature paste with a high proportion of inorganic solid lubricants, designed for slow-turning rolling bearings and open gears exposed to continuous extreme heat. How it works: the synthetic base oil lubricates up to around 200 °C and then evaporates, leaving the graphite to act as a dry lubricant up to 1,000 °C. Prevents stick-slip and micro-welding, even under high surface pressure.

Temperature range: −30 °C to +1,000 °C

Typical applications:

  • Rotary kilns
  • Kiln car bearings
  • Open gears
  • Slow-running bearings
  • hohe high surface pressure

Fluostar-Series

High-temperature grease

The go-to high-performance grease for industrial environments with extreme thermal and mechanical loads, where material compatibility, purity and resistance are critical, including in food processing areas.

Temperature range: -60 °C to +320 °C

Typical applications:

  • Rolling and plain bearings
  • Ovens and dryers
  • Rack trolleys
  • Oxygen valves and fittings
  • Robotics and electrical contacts
  • Selected products are NSF H1 registered

Fluolog-Series

Long-life grease for precision applications

Developed for precision engineering and electronics, where minimal friction, quiet operation and outstanding low-temperature stability are essential. Lubricated for life, no relubrication required.

Temperature range: -70 °C to +300 °C

Typical applications:

  • Miniature bearings
  • Plug connectors
  • Spindles
  • Control units
  • Printers and vending machines
  • Automotive components

How to Choose the Right High-Temperature Grease

The right grease for your application depends on several factors, including:
  • Service life and relubrication intervals
  • Resistance to steam, solvents and aggressive chemicals
  • Compatibility with seals, plastics and metals
  • Total cost over time, including maintenance
Choosing the wrong grease can damage your equipment and quickly become an expensive problem.

Need Help Choosing the Right Lubricant?

Whether it’s a single lubricant or a complete system, we’ll work with you to find a solution that’s technically sound, cost-effective and built to last.

Talk to us. We’re happy to help.

High-Temperature Grease - FAQs

Look at two things: the base oil and the temperature it’s rated for in continuous operation. A PAO-based grease claiming 220 °C isn’t realistic. That figure usually only applies for a very short, unspecified period. PFPE-based greases, on the other hand, can safely be used at their stated temperatures, although there are different types to consider here as well.

Yes, for temperatures up to around 200 °C, there are PFAS-free alternatives available. Above that, conventional greases run into physical limits. In those cases, we’ll talk you through the realistic options, including how they fit with upcoming regulations and your sustainability goals.

Yes. For most products, we also offer smaller quantities such as 50 g cartridges or samples. These are ideal for trials, prototypes or spot relubrication. To request a sample, call us on +49 9342 9169393 or email support@neukirchlubrication.de.

That depends on several factors, such as the type of load, contact with chemicals or other media, relubrication intervals and material compatibility. Our FLUOSTAR, RESISTENT and FLUOLOG product lines each cover different requirements. To make sure you choose the right one, we recommend a quick technical consultation with our experts.

Relubrication intervals depend directly on temperature. As a rule of thumb, grease life halves for every 10 °C rise above 60 °C. Some applications need regular relubrication, while others can run on components that are lubricated for life. We’re happy to help you work out what’s right for yours.

Yes. Many of the high-temperature greases we supply, particularly from the FLUOSTAR series, are NSF H1 registered for incidental food contact. They meet the relevant requirements for applications in packaging, food processing and pharmaceutical manufacturing.

A chemically inert grease doesn’t react with its surroundings. It stays stable when exposed to steam, cleaning agents, acids, alkalis or oxygen, which makes it particularly well suited to sensitive equipment and harsh operating conditions.

Still Have Questions?

You’ll find more answers on our FAQ page. Or just get in touch directly. Call us Monday to Friday, 9 am to 4 pm (CET), on +49 9342 9169393, or email us at support@neukirchlubrication.de.

All information is based on our current knowledge and development experience. It does not constitute a guarantee of specific properties or of a product’s suitability for any particular application. For further details, please contact our technical service team.