ISO 9222-1:1989

Technical drawings — Seals for dynamic application — Part 1: General simplified representation

This method indicates only essential features ans should be used when it is not necessary to show the exact shape and details of the seals, for example in assembly drawings. The degree of simplification depends on the kind of object represented, the scale of the drawing and the purpose of documentation. ISO 9222-2 deals with the detailed simplified representation.