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Tolerance of custom molded rubber parts

ISO03302-1 formulates 4 levels regarding the solid custom molded rubber parts in fixed size and closed size, that is:

M1 is level of precise custom molded rubber parts. These custom molded rubber parts requires precise mould, less action cavity, tight cooperation, this will lead to high cost. Optical analyzer or other similar test equipments will be used, to reduce the deformation of rubber parts to the smallest degree when measuring. This kind of products will cause high monitoring costs.

M2 is level of high quality custom molded rubber parts, include many essential precise control in M1 level.

M3 is level of good custom molded rubber parts.

M4 is level of custom molded rubber parts with non-strict demand scale.

Fixed size (F): the size will not influenced by transverse displacement of thickness of the flash or different parts of the mould.

Closed size (C) : the size will influenced by transverse displacement of thickness of the flash or different parts of the mould.

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