Ecsaine

[Ron Nossaman]

I know Ecsaine is being used in upright butts and catchers, but I don't 
recall any mention of it's being used in grands or elsewhere in the piano. 
Is any manufacturer using Ecsaine as a knuckle covering, repetition lever 
skin or cloth, backcheck covering, or key bushing? If not Ecsaine, what 
other artificial leathers, etc are currently being used in pianos?
Ron N