The Chemours

Krytox 240 series greases are white, buttery greases with all of the same properties as the 143 series oils that they are made from, but they are in grease form. The 240AZ, 240AB and240AC met MIL-PRF-27617 general specifications. Many of the other 240 series products meet other specifications for individual applications.

This Krytox grease is a special high temperature grease with low oil evaporation that provides long bearing life and is compatible with all elastomers and plastics. It has excellent lubrication over a broad temperature range but is designed to work best between temperatures 200-300 ⁰C(400-572 ⁰F). It is nonflammable, oxygen compatible and chemically inert.

This Krytox grease is a special high temperature grease with low oil evaporation that provided long bearing life and is compatible with most elastomers and plastics. This grease contains sodium nitrite corrosion/anti-wear inhibitor and is ideal for corrosive environments where there is no danger of the sodium nitrite additive reacting with chemicals or causing contamination problems. It has excellent lubrication over a broad temperature range but is designed to work best between temperatures 200-300 ⁰C (400-572 ⁰F). It is nonflammable, oxygen compatible and chemically inert.

Krytox XHT-BD Performance Lubricant Greases is designed for use where the temperatures are in the 300⁰C (572 ⁰F) range and higher where there is a danger of melting the standard PTFE thickner. This grease uses a special non-melting high temperature thickener that also provides extreme pressure properties and works as a solid lubricant if the base oil is depleted. The base oil is an extremely viscous oil that provided good viscosity and lower evaporation at high temperatures. The grease is slightly tacky and will coat the surface and stay in place The Oil in the grease can begin to slowly degrade at temparatures above 330 ⁰C (625 ⁰F) and this will occur at an increasing rae as temparatures increase. Relubrication could be requires at these temperature to achieve optimum life. Maximum use temperatures for these greases are 360 ⁰C(680 ⁰F) with intermittent spikes to 400 ⁰C (752 ⁰F).

A special high vacuum grease for application where outgassing must be avoided. This is used in high vacuum industries and for sealing joints in laboratory applications.

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This Krytox grease is designed for use where the temperatures are in the 300 ⁰C (572 ⁰F) range and higher where there is a danger of melting the standard PTFE thickener. This grease uses a special non-melting high temperature thickener. The base oil is an extremely viscous oil that provides good viscosity and lower evaporation at high temperatures. The grease is for use in low speed bearings and will shear at high speeds, causing loss of oil. The Oil in the grease can begin to slowly degrade at temparatures above 330 ⁰C (625 ⁰F) and this will occur at an increasing rste as temperatures increase. Relubrication could be required at these temperatures to achieve life.

Krytox oils combine high-temperature performance, non-flammability, and chemical inertness under a wide range of conditions.

Krytox oils offer superior stability, lubricity and viscosity, delivering excellent lubrication and value by reducing the burdensome maintenance costs of re-lubrication, component failure and machine downtime. The remarkably long-lasting protection of Krytox oils can increase the service life of critical components.

The superior lubrication and load-carrying ability of Krytox oils also allows them to stand up to hostile environments, protecting parts in temperatures as hot as 399 °C and as cold as-75 °C.

These exhibit the following properties:

• Protect surfaces under high loads
• Excellent resistance to water washout.
• Clear and colorless, non-reactive, non-flammable, and long-lasting fluorinated synthetic oils
• Safe for chemical and oxygen service; provide radiation resistance
• Non-reactive to harsh chemicals, acids, steam or moisture Constant boiling fluids.
• Inert, non-reactive fluids
• NSF H1-certified for incidental food contact, high-temperature, extreme-pressure,
• water-resistant oils for food machinery applications.
• Non-reactive to all elastomers, plastics, most metals and process chemicals; high molecular weight; low vapor pressure; safe for oxygen systems; available with anti-rust protection.

Krytox GPL 10X Oil Grease series contains no additives and can be used on components that come in contact with chemicals. Typical Applications include valves or bearings in contact with chemicals, seal barrier fluids, instruments and oxygen systems.

The GPL 29X greases have EP and anti-corrosion additives and have been formulated for high temperature applications that need both high load carrying capacity and anti-corrosion protection. Typical applications include slow-speed conveyor bearings that are subjected to vibrations, moist conditions or frequent temperature cycling that could allow condensation and rusting to occur.

Krytox 143 series oil are clear, colorless Fluorinated synthetic oils that are nonreactive, nonflammable, safe in chemical and oxygen service and long lasting.

Krytox 283 series anti- corrosion greases are white greases which contain sodium nitrite. These grades provide rust protection at ambient temperatures, corrosion protection at high temperatures and anti-wear protection.

Krytox Vacuum Pump fluids are used in vacuum pumps and vacuum systems and are used when controlled vapor pressure, nonflammability and nonreactivity are needed. These products can be regenerated back to original properties and reused.

This Krytox grease is similar to the XHT-AC Lubricating Greases but contains anon-nitrite, anti-corrosion additive that is the salt of an organic acid. The grease is designed to give higher performance in 200-300 ⁰C (400-572 ⁰F) range. The base oil is extremely viscous oil that provides good viscosity and lower evaporation at high temperatures.

A grease containing a special EP additive and anti-corrosion additive for use under high loads where corrosion might be a factor.

These greases have been formulated for high-temperature applications that need both high load carrying capacity and anti-corrosion protection. Typical applications include conveyor chains that are subjected to moist conditions or frequent temperatures cycling that could allow condensation and rusting to occur.

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Opteon™ SF-79 is a high solvency cleaning agent which is non-flammable and a low environmental impact product for cleaning applications. Typical applications for this product include degreasing, precision cleaning, defluxing, silicone removal, and general solvent cleaning.

Opteon™ Sion represents a safe alternative to chlorinated solvents such as HCFC-225, 141b, TCE and nPB, which are currently being phased out due to health and environmental risks.

The safe exposure limit for nPB has been measured at 5-10 ppm – industry authorities even recommend further reducing to 0.1 ppm – whereas Opteon™ Sion has a safe exposure limit of 201 ppm, which is comparable to everyday rubbing alcohol.

Performance

The cleaning power of Opteon™ SF-79 has been measured up to a 100 KB value, which is a cleaning power standard. Opteon™ Sion can match nPB and other common formulations ounce for ounce, providing all their solvency benefits, while offering a superior toxicity profile.
 

Maintenance

While Opteon™ SF-79 is a safe, effective, and environmentally friendly nPB replacement, nPB requires acid acceptance testing, stabilizer maintenance, and solvent air monitoring for safe and effective use. These additional formulations and processes increase your overall cost of using nPB – making Opteon™ Sion an even better, safer value.
 

Benefits:

• Designed to clean a wide range of soils
• Fast, residue-free drying; offers viscosity to clean oil and grease from small parts, leaving no residue
• Compatible with a broad range of metals, plastics, and elastomers
• Chemically and thermally stable
• Zero ODP and low GWP (< 15 GWP)
• Recyclable and reusable
• Low surface tensions
• Non-flammable
• Allows for the continued use of existing equipment (no or minimal equipment upgrade necessary)
• Easy to handle, easy to store
• Available in multiple package sizes

 

The GPL 22X series contains sodium nitrite corrosion/anti-wear inhibitor and is ideal for corrosive environments where there is no danger of the sodium nitrite additive reacting with chemicals or causing contamination problems. Typical applications are automotive bearings, sealed pump bearings, electric motor bearings and general purpose bearings.

Krytox 250 series EP grease are black grease which contain molybdenum disulfide added as an extreme pressure additive for highly loaded gears and bearings.

Krytox GPL 246 Typical Properties:

• Base Oil Viscosity 810 cSt at 20°C (68°F) 240 cSt at 40°C (104°F) 25 cSt at 100°C (212°F)
• Useful Temperature Range –36 to 260°C (–33 to 500°F)
• Appearance Copper colored, buttery
• Consistency NLGI Grade 2 Electrical Conductivity 2.85 x 10–5 W·cm ASTM D257

 

Some applications require electrical conductivity. Most greases act as insulators. This special grade of Krytox® has been formulated with copper powder in grease to act as a conductor of electricity. Krytox® oils provide long life and high-temperature stability and lubrication. The addition of copper powder also improves the thermal conductivity of the grease for applications where improved heat transfer is needed; however, it can increase bearing noise and wear. Because GPL 246 is formulated with our Krytox® GPL 106 base oil, it retains many of the properties of that oil. Consult our "Krytox® Oils and Greases" brochure, H-58505, for more information.

Krytox Linear perfluoropolyethers (PFPEs) provide exceptional low volatility characteristics for longer lubricant life. The base oils have high viscosity indexes to provide effective lubrication over a wider temperature range. They have the excellent chemical and thermal stability of all Krytox products, and are nonflammable and safe for use in oxygen and other harsh chemical environments.

Six base oil grades are available to meet the needs of all major applications. The standard products are called Krytox L-(grade number)oil or grease. Greases are also available with a choice of two anti-corrosion/anti-wear additives, including our patented XP soluble additive. The greases are thickened with polytetrafluoroethylene (PTFE), which gives a smooth, buttery, white-coloured NLGI grade 2 grease.

The XP 2C5 grease contains an oil soluble additive that is effective at preventing corrosion and reducing wear. It also contains an extreme pressure additive Typical applications include those in potentially corrosive atmospheres, where vibration or shock loading may be significant and where an element will spend more time experiencing mixed film or boundary lubrication versus the desired full film or hydrodynamic Lubrication.

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A silica thickened non-melting thickener for low speed applications in conveyors and other such applications where temperature might cause PTFE melting.

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