BS ISO 4081:2016

Foreword
1 Scope
2 Normative references
3 Classification
4 Size and tolerances
5 Performance requirements for hose and tubing
6 Frequency of testing
7 Marking
Annex A (normative) - Dilation test
Annex B (normative) - Resistance to surface contamination
        by engine oil
Annex C (normative) - Pressure, vibration and temperature test
Annex D (informative) - Example of how a non-standard
        type of hose or tubing could be specified by an original
        equipment manufacturer (OEM) using a matrix
Annex E (normative) - Type test
Annex F (normative) - Routine test
Annex G (informative) - Production acceptance test
Bibliography

Provides the requirements for straight or pre-formed rubber hoses and tubing for use in pressurized or unpressurized cooling circuits containing 1,2-ethanediol-based coolants in internal-combustion engines for vehicles with an unladen mass (as defined in ISO 1176) of 3,5 t or less.

This International Standard specifies the requirements for straight or pre-formed rubber hoses and tubing for use in pressurized or unpressurized cooling circuits containing 1,2-ethanediol-based coolants in internal-combustion engines for vehicles with an unladen mass (as defined in ISO1176 ) of 3,5t or less. In addition, this specification may also be applied as a classification system to enable original equipment manufacturers (OEMs) to detail a “line call-out” of tests for specific applications where these are not covered by the main types specified (see example in AnnexD). In this case, the hose or tubing would not carry any marking showing this ISO specification number but may detail the OEM’s own identification markings as shown on their part drawings.