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ISO 6547:1981
Hydraulic fluid power -- Cylinders -- Piston seal housings incorporating bearing rings -- Dimensions and tolerances
Establishes the dimensions and associated tolerances for a series of housings for piston seals. Specifies the dimensions for a range of seal housings of 25 to 500 mm. It applies to piston-heads that may either be assembled from a number of components or made in one piece. A figure shows an example of housing.
International Organization for Standardization [iso]

