I got this info from a DuraCoat website.
DURACOAT IS NOT A DIPPING PROCESS. DuraCoat is a two part chemical coating. Unlike other firearm finishes, DuraCoat was created specifically for firearms. Other firearm finishes are "spin-off's" from other industries.
How durable is DuraCoat?
DuraCoat is permanent. With normal use, a firearm finished with DuraCoat will last several lifetimes.
Is DuraCoat Teflon based?
No. Teflon is a lubricating coating, which is great for internals, but will not wear as well as DuraCoat on the exterior surface of a firearm. DuraCoat's combination of elasticity and hardness creates a finish impervious to impact, scratching and the elements. Some users say DuraCoat displays some lubricating qualities, but this phenomenon was never intended when DuraCoat was created. Since then DuraCoat has been blended to incorporate the lubricating properties desired by todays' shooters.
Will DuraCoat adhere to hard coat anodizing and Parkerizing?
DuraCoat loves hard coat anodizing and Parkerizing as a base. Both processes leave a good rooting surface for DuraCoat.
Can DuraCoat colors be blended together?
Yes. All DuraCoat colors can be intermixed. With a handful of standard DuraCoat colors, we can create an infinite number of colors by blending them.
I hunt along saltwater. Will DuraCoat withstand the salty environment?
Certainly. DuraCoat is well suited for salty environments. One of DuraCoat's attributes is its extreme ability to resist salt corrosion. A firearm coated with DuraCoat simply will not rust...EVER!
Will DuraCoat burn off my barrel?
DuraCoat can withstand temperatures as high has 500-600 degrees F. With "normal" shooting, your barrel will never get close to being that hot. If you are fortunate enough to own a transferable machine gun, or if you like to "blaze" with your semi-auto, do not put DuraCoat on your barrel, as your barrel temperature will rise to over 1,000 degrees F. In those cases, we would use DuraHeat. Our DuraHeat coating can handle temperatures up to 1,800 degrees F.