How durable and abrasion-resistant is the coating? Gentoo is very durable and abrasion resistant. The ASTM D 3363 pencil hardness of Gentoo applied to hard surfaces is 9H. By mpturner|2020-04-07T16:58:18-04:00April 7th, 2020|Characteristics of Gentoo|Comments Off on How durable and abrasion-resistant is the coating? Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInTumblrPinterestVkEmail About the Author: mpturner