This part of IS0 3302 specifies classes of dimensional tolerances, and their values, for moulded, extruded and calendered solid rubber products. The relevanttest methods necessary for the establishment of compliance with this International Standard are also specified.The tolerances are primarily intended for use with vulcanized rubber but may also be suitable for products made of thermoplastic rubbers.This part of IS0 3302 does not apply to precision toroidal sealing rings or to calendered composite products such as rubber-coated fabrics or products where a rubber coating is applied by the process of topping or skim coating.