ISO 3601-1-2012 pdf free download.Fluid power systems – O-rings 一 Part 1: Inside diameters, cross-sections, tolerances and designation codes. 7 Designation codes 7.1 O-rings for general industrial applications that conform to this part of Iso 3601 shall be designated as follows: a) the word “O-ing” fllowed by a hyphen; b) “ISO3601-1″ followed by a hyphen; c) the size code from the relevant table (see Tables 1 through 6) and “A” or“B” for the inside diameter tolerance class, fllowed by a hyphen; d) the nominal inside diameter and cross-section dimensions, separated by an“x” and followed by a hyphen; e) the grade letter (N, S or CS), in accordance with ISO 3601-3. EXAMPLE 1 O-ring-IS03601-1-01 1 A-7,65×1 .78-S EXAMPLE 2 0-ring-IS0360 1-1-1 25B-32,99×2,62-N 7.2 0-rings for aerospace applications that conform to this part of ISO 3601 shall be designated as follows: a) the word 0-nng” followed by a hyphen; b) 1S03601-1 followed by the letter NA” (to designate an aerospace application), followed by a hyphen; c) the size code from the relevant table (see Tables 7 through 11), followed by a hyphen; d) the nominal inside diameter and cross-section dimensions, separated by an “x” and followed by a hyphen; e) the grade letter (N, S or CS), in accordance with ISO 3601-3. EXAMPLE 1 0-nng-1S03601 -1 A-C0545-54 ,5×3.55-S EXAMPLE 2 0-ring-1S03601 -1A-D1 250-1 25×5,3-CS 8 Methods of measuring for receiving inspection When it is necessary to inspect 0-rings that conform to this part of ISO 3601 at the time of customer receipt, the inspection procedure shall be agreed upon by the supplier and purchaser at the time of order. Annex B provides possible methods for such a procedure for information. 9 Identification statement (reference to this part of ISO 3601) Manufacturers are strongly recommended to use the following statement in test reports, catalogues and sales literature when electing to comply with this part of ISO 3601: 0-ring inside diameters, cross-sections, tolerances and designation code are in accordance with ISO 3601-1:2011, Fluid power systems — 0-rings — Part 1: Inside diameters, cross-sections, tolerances and designation codes.”ISO 3601-1 pdf download.
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