Specifies the characteristics of hose assemblies with corrosion-resistant metal braid and convoluted PTFE inner tube for use in aerospace fluid systems at temperatures between -55 and +200C and at normal pressures depending upon bore size, up to 6.8 MPa.
BS M 57:1985 history
1985BS M 57:1985 Specification for high temperature convoluted hose assemblies in polytetrafluoroethylene (PTFE) for aerospace applications