Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Use of aluminium washers versus copper asbestos washers for joints.

Identifier  ExFiles\Box 149\4\  scan0308
Date  2nd June 1937
  
-2-
Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}7/AP.2.6.37

(5) There is a general opinion in the Depots against the use of aluminium washers for joints under plugs and banjos of every description. The plugs have to be over tightened to make a tight joint. Other manufacturers who do not use fibre washers, use copper asbestos washers which do not require over tightening, and do not tear up when taken apart.

Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux}
  
  


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