...Bill Wilson Summarizes briefly the dramatic advances made in the reliability of mechanical seals for rotating shafts in the process chemical and petrochemical industries over the last 30 years. Shows that expected mean time before failure has improved from tens of days to years over that time. ©...

...John A. Stubbs Describes the role of the camshaft toothed drive belt used used in modern cars. Reveals that camshaft belt failure is the single biggest cause of engine failures referred to the AA laboratory and that incorrect tensioning is the major contributing factor. Gives detailed advice on how...