Jul 3, 2014 #1 Fudian Chemical Jul 3, 2014 2 0 0 SG Dear all, is a combination for API seal plan 11 and 53B possible for double mechanical seal? Chris
Jul 4, 2014 #3 GPRnD Mechanical May 23, 2007 148 0 0 US What JJPellin said Plan 11 is commonly used with Plan 53. Upvote 0 Downvote