Htattoo- I have not used this product - But I do have good knowledge of finish materials - and when applying a finish to a tattoo machine the question is how well will the finish hold up to the tubes sliding through the vise-and any chemicals that maybe used to wipe the machine down . I checked out the product on the manufactures web site and it looks promising , as long as all the prep is done corectly - and when you spray the permamlac coat it several times . and since they tested it with alcohol and gasoline wipe down tests and it passed it seems strong , much better than renwax which IMO is a good product also .Note: In some instances, for example on hot and humid days, the fast drying PERMALAC can trap moisture underneath the seal. This trapped moisture will manifest itself as a "cloudy" coating. Such cloudy coatings can be prevented by the addition of the slow drying #69 thinner, or an even slower #500 slow-dry thinner.