O-Ring Limitation |
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| O-Ring Limitation "Although it has been stated that O-Rings offer a reasonable approach to the ideal hydraulic seal, they should not be considered the immediate solution to all sealing problems. it has been brought out in the foregoing discussion that there are certain definite limitations on their use, for example, high temperature, high rubbing speeds, cylinder ports over which seals must pass, and large shaft clearances. Disregard for these limitations will result in poor seal performance. Piston rings, lip type seals, lapped fits, flat gaskets and pip fitting all have their special places in hydraulic design, but where the design specifications permit the proper use of O-Rings, they will be found to give long and dependable service."* While no claim is made that an O-Ring will serve best in all conditions, it merits consideration for most seal applications except: A. Rotary speeds exceeding 1500 feet per minute *"O-Ring Seals in the Design of Hydraulic Mechanisms" A paper presented at the S.A.A. Annual Meeting, January, 1947 by Mr. D.R. Pearl of Ha,. Std. Prop. Div. of United Aircraft Corp. |
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