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BS 3G 198-2:1997

Current
Current

The latest, up-to-date edition.

Sleeves for aircraft electric cables and equipment wires Specification for slip-on sleeves for identification purposes
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

15-11-1997

Committees responsible
Foreword
1 Scope
2 References
3 Information and requirements to be agreed and
    documented
4 Materials
5 Colour
6 Finish
7 Printing
8 Dimensions
9 Type testing
10 Production routine and quality testing
11 Tests
12 Marking and packaging
Annex
A (informative) Storage recommendations
Tables
1 Size of printed characters
2 Dimensions of type 7 sleeves
3 Standard cutting tolerances for cut lengths of
    sleeves
4 Type tests
5 Production routine tests
6 Production quality tests
7 List of test fluids
8 Standard colours, availability and coding
Figure
1 Disposition of characters on identification sleeves
List of references

Defines design, performance, quality assurance requirements and test methods for type 7 of polytetrafluoroethylene (PTFE) slip-on sleeves for identifying electric cables and insulated equipment wires in aircraft, which do not expand in diameter. Resistant to fuels, lubricants and hydraulic fluids, including ester-based lubricants and hydraulic fluids.

This Part of BS G 198 specifies the design, performance, quality assurance requirements and methods of test for the following type of polytetrafluoroethylene (PTFE) slip-on sleeves suitable for identification of electric cables and insulated equipment wires in aircraft. The design of the sleeves is such that they do not expand in diameter.

Type 7. These are sleeves which, when fitted, are for use in the following temperature ranges:

  1. – 65 °C to 250 °C for at least 20 000 h2);
  2. up to 300 °C for at least 168 h3);
  3. up to 350 °C for at least 4 h4).

These sleeves are resistant to fuels, lubricants and hydraulic fluids, including ester-based lubricants and ester-based hydraulic fluids.

NOTE The latest revision of an Aerospace Series standard is indicated by a prefix number.

Recommendations for the storage of finished sleeves are given in Annex A.

2) The procedures described in BS 5691-2:1995 for evaluation of thermal endurance are not readily applicable to PTFE. However, experience of product performance indicates that PTFE sleeving may be suitable for inclusion in systems for operation at temperatures upto 260 °C.

3) When assessed in accordance with 11.12.

4) When assessed in accordance with 11.5.

Committee
ACE/6
DevelopmentNote
Supersedes 96/713869 DC and BS 2G198-2(1982) (07/2005) Reviewed and confirmed by BSI, December 2012. (11/2012)
DocumentType
Standard
Pages
18
PublisherName
British Standards Institution
Status
Current
Supersedes

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PD ISO/TR 21891:2017 Aerospace electrical requirements. Sleeves and moulded shapes. Specifications for aircraft use
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BS 2782-3:Methods 320A to 320F:1976 Methods of testing plastics. Mechanical properties Tensile strength, elongation and elastic modulus
DEFSTAN 81-41(PT2)/3(1991) : 1991 AMD 5 1998 PACKAGING OF DEFENCE MATERIAL - DESIGN
BS 2782-5:Method 540B:1982 Methods of testing plastics. Optical and colour properties, weathering Methods of exposure to laboratory light sources, (xenon arc lamp, enclosed carbon arc lamp, open-flame carbon arc lamp, fluorescent tube lamps)
BS 6746C:1993 Colour chart for insulation and sheath of electric cables
BS 1595-1:1986 Propan-2-ol (isopropyl alcohol) for industrial use Specification for propan-2-ol (isopropyl alcohol)
BS 3F 68:1977 Specification for controlled storage of vulcanized rubbers for use in aerospace applications
ISO 1817:2015 Rubber, vulcanized or thermoplastic Determination of the effect of liquids

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