VSPFor Mounting With An Axially Supported L-Section Ring In Series YRT. In Fitting Of The Series Yrt With An L-Section Ring Supported Axially Over Its Whole Surface, There Is An Increase In The Axial Rigidity In The Direction Of The Support Ring As A Function Of The Support Ring Rigidity And In The Tilting Rigidity Of Up To 20%. In This Case, Delivery With A Different Preload Match Is Necessary