1 Scope
This standard specifies the following geometrical tolerances for moulded and extruded solid rubber products, including those with metal inserts:
——flatness tolerance;
——parallelism tolerance;
——perpendicularity tolerance;
——coaxiality tolerance;
——positional tolerance.
The tolerances are primarily intended for use with vulcanized rubber but may also be suitable for products made of thermoplastic rubbers.
2 Normative references
The following standards contain provision which, through reference in this text, constitute provisions of this standard. At the time of publication, all editions cited were valid. All normative documents are subject to revision, and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below.
GB/T 2941-1991 Rubber - Standard temperatures, humidities and times for the conditioning environmental and testing of test pieces (eqv ISO 471: 1995)
GB/T 5723-1993 Rubber, vulcanized or thermoplastic－Determination of dimensions of test pieces and products for test purposes (eqv ISO 4648: 1991)
GB/T 6031-1998 Rubber, vulcanized or thermoplastic - Determination of hardness (hardness between 10 IRHD and 100 IRHD) (idt ISO 48: 1994)
ISO 1101: 1983 Technical drawings - Geometrical tolerancing - Tolerancing of form, orientation, location and run-out - Generalities, definitions, symbols, indications on drawings1)）
Foreword i
ISO Foreword
1 Scope
2 Normative references
3 Classes of tolerances
4 Measurement of dimensions
5 Flatness tolerance
6 Parallelism tolerance
7 Perpendicularity tolerance
8 Coaxiality tolerance
9 Positional tolerance
