This perhaps? Why are you asking? Are you rebuilding the Yamaha engine? PowerSeal USA
PowerSeal USA’s NikaSeal plating is a nickel composite layer with silicon carbide particles impregnated for added hardness, increased durability, and superior lubrication. NikaSeal has excelled under the most extreme conditions by users ranging from weekend warriors and grass roots racers to top-level National and World Championship competitors. Leading engine builders, performance tuners, and factory race teams depend on NikaSeal to deliver the performance and reliability required to win.
Ah. SnowBlowerForum.com Site Sponsors
Sorry. Had no idea what you were referring to but it was my fault. Too often I just click on "new posts" link and fail to note the particular forum I'm in.
If they are paying for SBF to be around I dont ask questions and I just say thanks as I wonder what they do?