We usually list the total number of Teflon™ coating properties at eight. The Dry Lubrication property also goes by “Lubricity” and “Low Coefficient of Friction.” To the layman, this Teflon™ property might sound a lot like “non-stick,” but there is a significant functional difference.
Non-stick means that almost no solid substance will adhere to the surface. Dry Lubrication, on the other hand, refers to how easily a coated surface will slide over another surface. The most common Teflon™ coatings used for high lubricity in industrial applications are PTFE one-coats in the 958G line (-303, -313, -404, and -414).
Dry Lubrication and Friction
Friction is the force created when two objects rub together and motion is hindered. With a Teflon™ industrial coating, the “coefficient of friction” is generally lowered to a range of 0.05 to 0.20, depending on the load, sliding speed, and type of coating used. Dry Lubrication is very important in any application that has moving parts touching each other frequently or with significant force.
Teflon™ PTFE one-coats are superior dry film lubricants with smooth and slick finishes fusing to substrates with strong adhesion to provide great durability. These industrial coatings are excellent for minimizing friction and galling, as well as preventing seizing, especially where re-lubrication with fluid is not possible or there is exposure to dirt or dust. PTFE one-coats are often used in the automotive, aerospace, and oil & gas industries because of the ideal combination of Teflon™ properties available under different grades of durability and thickness.
958G Teflon™ Coating Properties
The popular 958G PTFE line provides high heat resistance to operating temperatures of up to 500 degrees F. These solvent-based coatings are also easy to apply for a number of reasons. They apply in one coat, cure schedules can be flexible, they have superior adhesion, and cleanup is painless.
The thin-film 958G-303 version is an industry standard and has been used for dry lubrication for many years. The 958G-313 version, introduced in 2016, is also a good option because it is more durable than -303. For thicker film applications (up to 4 mils DFT) with high lubricity, we recommend using 958G-406 (black) or -414 (dark green).