BS 6997:1990
Current
The latest, up-to-date edition.
Specification for elastomeric toroidal sealing rings (\'O\'-rings) manufactured from acrylonitrile-butadiene rubbers complying with BS 6996
Hardcopy , PDF
English
31-08-1990
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Foreword
Committees responsible
Specification
1. Scope
2. Dimensions
3. Surface imperfections
4. Material
5. Physical properties
6. Packaging and storage
7. Marking
Appendix
A. Method for the determination of compression set
Table
1. Physical properties
Requirements for the composition and physical properties of rings of five different hardness values, for use in particular in contact with mineral oils.
| Committee |
PRI/54
|
| DevelopmentNote |
Supersedes 84/35373 DC (09/2005) Reviewed and confirmed by BSI, January 2011. (12/2010)
|
| DocumentType |
Standard
|
| Pages |
8
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
This British Standard specifies requirements for the composition and physical properties of toroidal sealing rings (“O??-rings) manufactured from acrylonitrile-butadiene rubbers complying with BS 6996. The five hardness grades of acrylonitrile-butadiene rubbers used are B0 50, B0 60, B0 70, B0 80 and B0 90 of BS 6996.
NOTE The titles of the publications referred to in this standard are listed on inside back cover.
| BS 907:1965 | Specification for dial gauges for linear measurement |
| BS 903-A26:1969 | Physical testing of rubber Determination of hardness |
| BS 6996:1989 | Specification for mineral oil resistant acrylonitrile-butadiene rubber compounds |
| BS 903-A16:1987 | Physical testing of rubber Determination of the effect of liquids |
| BS 6442:1984 | Specification for limits of surface imperfections on elastomeric toroidal sealing rings (\'O\'-rings) |
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