My 6 year boot life has passed once again and so it was time to rebuild my PSS on both shafts. I have 1 1/4” shafts on a 32' twin diesel flybridge motor yacht. These seals are awesome. I contacted PYI at their factory since I live just south an hour or so. My wife and I met the owner Kevin Woody at the front desk. I had my old parts with me. He looked at my carbon/graphite flanges and told me they were the wrong internal bore size for my shafts. He said "wait a moment, I’m going to fix you up.” He provided me with two brand new SS rotors and flanges for no charge. These were the updated ones with the stainless cooling line barbs as my old ones had a plastic barbs. He also gave me 4 rebuild kits. These contain the new SS set screws, rotor o-rings, the little rubber end covers for the boot clamps, a hex wrench and a small tube of blue Loctite. I bought the remaining consumable rebuild part which is boots that come with their beautifully engineered billet clamps. I have to tell you, PYI is a standup company. Kevin gave my wife and I a personal tour of the plant, the CNC machine shop which is impressive, the quality assurance lab, and the shipping area. We also saw a new flange design which was running on a test bed. It had been running several hundred hours and was dry as a bone. The place is as clean as an operating room. We were shown how they use a device called a helium light band wavelength optical viewer to quality assure the lapped “flatness” of a graphite carbon flange to just a few “Heliums”. That is very near perfectly flat. We were amazed. Kevin Woody is a wonderful man who took his time, took us under his wing and backed his product long past any reasonable warranty period and was so generous as to not charge us for the parts we needed since he felt they were not initially correct. To say they stand behind their product is an understatement. If I were you, I would use the PYI packless shaft seal system on your boat. Who wants sea water in your engine bilge if it doesn’t have to be there? I sure don’t. Thanks Kevin for the fun time we had looking at your amazing factory. And a huge thanks for backing your product beyond all reasonable expectation. The quality of your product is first class. It was a pleasure to meet you and your crew. God Bless. Craig M.