BS 4F 68:2002

This standard BS 4F 68:2002 Controlled storage of vulcanized rubbers for use in aerospace applications is classified in these ICS categories:

• 49.025.40 Rubber and plastics

1.1 This British Standard specifies requirements for the storage, and inspection during storage, of vulcanized rubber, whether in the form of materials or as components to be used for aerospace purposes. These requirements also apply to items made from cellular rubber.

1.2 The requirements of this standard do not apply to rubber components contained within mechanical assemblies, e.g. pumps and valves.

NOTE In such cases the recommendations of the assembly supplier for exercising the assembly and lifing of the rubber need to be sought and applied.

1.3 The storage periods quoted apply only if the storage conditions specified in Annex A are complied with and if the packaging complies from the date of cure with the requirements of BS F 69, as far as is practicable, making allowance for subsequent manufacturing operations.

1.4 The storage period comprises the whole period of existence of the rubber from the date of cure. This period will generally be divided between manufacturing (including assembly) and storage (e.g. in manufacture, by stockists, by aircraft constructors and operators) and the division of this period should be mutually agreed between the interested parties.

1.5 These requirements are based on the classification of rubbers into groups as defined in Clause 3.