NyeBar® - Barrier Films

NyeBar® is a transparent, fluorocarbon barrier film coating solution that prevents oil migration and the subsequent contamination of nearby, sensitive components. Liquids, like oils, will spread upon or “wet” any surface where the surface energy is higher than the surface tension of the fluid.

Because of the very high surface energies of metals, fluids readily spread or creep on any clean metal surface. Once applied, a thin coating of NyeBar® modifies the surface of a metal or other solid, enabling it to slow the migration or creep of fluids on that surface. This prevents oil from reaching critical components, thus reducing the risk of contamination and failure.

Features & Benefits

• Oleophobic (repels oil)
• Prevents oil creep and migration
• Protects against contamination
• Resists moisture
• Improves electrical reliability

Where is NyeBar® Used?

NyeBar® is a reliable, proven, and trusted solution to control oil migration, and was even used on the Mars Rover to protect camera optics. NyeBar® barrier films are most commonly used whenever lubricant migration is a concern including:

• Bearings
• Actuators
• Printed circuit boards
• Optics
• Spray nozzles
• Mold release agent

Where Should I Apply NyeBar® Barrier Films?

When using NyeBar® to prevent migration of lubricating oils, the NyeBar® solution should not be applied in the area requiring lubrication, but rather as a dam or barrier around that area. For example, a lubricant should be applied to the bearing shaft rather than the bearing raceway. This is because the barrier film would render these components non-wettable by the lubricant, thus resulting in a possible lack of lubrication and subsequent component failure. Should NyeBar® accidently be applied to these components, it can be removed using fluorinated solvents and - to a lesser extent - by chlorinated solvents.

How Do I Apply NyeBar® Barrier Films?

NyeBar® can be used to coat a variety of materials including copper, aluminum, steel, tin, plastic, and glass. NyeBar® is most often applied by using a brush-cap bottle and is applied like nail polish to create a barrier around the lubricated parts. It can also be applied by dipping or spraying the component. Air drying for five minutes permits evaporation of the carrier solvent, and a very thin, but fully effective barrier film, will remain.

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