BS 4F 68:2002
$86.31
Controlled storage of vulcanized rubbers for use in aerospace applications
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 14 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD AEROSPACE SERIES |
| 2 | Committees responsible for this British Standard |
| 3 | Contents |
| 5 | 1 Scope 1.1 1.2 1.3 1.4 1.5 2 Normative references 3 Classification of rubbers Table 1 Group A rubbers |
| 6 | Table 2 Group B rubbers Table 3 Group X rubbers 4 Storage 4.1 Requirements |
| 7 | Table 4 Initial and extension periods for materials and unassembled components in storage 4.2 Repackaging 4.3 Inspection before final assembly |
| 8 | Annex A (normative) Storage conditions A.1 General requirements A.1.1 Temperature A.1.2 Humidity A.1.3 Light A.1.4 Ozone A.1.5 Deformation A.1.6 Contact with liquid and semi-solid materials A.1.7 Contact with metals A.1.8 Contact with dusting powder A.1.9 Contact between various rubbers A.1.10 Articles with rubber-to-metal bonds A.1.11 Containers, wrapping and covering materials |
| 9 | A.1.12 Rotation of stocks A.1.13 Cleaning A.2 Requirements for the storage of specific items A.2.1 Tyres Table A.1 Periods for rotation of tyres in storage A.2.2 Inner tubes A.2.3 Hose assemblies, hoses and tubing |
| 10 | A.2.4 Flexible fuel tanks, dinghies and other inflatable items A.2.5 Seals (including door seals) and extrusions Annex B (normative) Methods of inspection and testing B.1 General B.2 Requirements for the methods of inspection and testing of specific items B.2.1 Tyres B.2.2 Inner tubes B.2.3 Hose assemblies |
| 11 | B.2.4 Hoses and tubing B.2.5 Flexible fuel tanks B.2.6 Dinghies and other inflatable items B.2.7 Seals, extrusions and large components B.2.8 Braided rubber cords B.2.9 Rubber-to-metal bonded components |
| 12 | Annex C (informative) Previous rubber groupings Table C.1 Classification of rubbers according to rate of deterioration |
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BS 3F 68:1977
Specification for controlled storage of vulcanized rubbers for use in aerospace applications Published By Publication…
