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).
Laboratory report comparing the oil and water resistance of two different rubber compositions for Phantom III cylinder liner sealing rings.
| Identifier | ExFiles\Box 93\4\ scan0030 | |
| Date | 24th December 1935 | |
| x 319 To E.{Mr Elliott - Chief Engineer} c. Wor.{Arthur Wormald - General Works Manager} c. Hs.{Lord Ernest Hives - Chair} c. HY.{Tom Haldenby - Plant Engineer} c. MX.{John H Maddocks - Chief Proving Officer} c. R.H.C. Hl.1/AG.24.12.35. Laboratory. Re: Phantom lll Cylinder Liner Sealing Rings. (ES/HP.10.12.35.) Samples of the "D.T.Y.10" and of the "D" composition rubber rings were immersed in oil at 120°C. for a period of 30 hours. Comparison tests with water at boiling point were carried out simultaneously. D.T.Y.10 in oil increased by 104% in volume. D.T.Y.10 in water " 2.2% " " "D" in oil " 13.2% " " "D" in water " 3.1% " " The conditions of test are of course far more severe than engine conditions in order to obtain the results quickly, and indicate that the "D" composition is much more satisfactory in its oil resistance than the D.T.Y.10 specification. Hl. HE | ||