This document specifies the required characteristics for heat-shrinkable fluoroelastomeric, heat-shrinkable boots for use in aircraft electrical systems at operating temperatures between "55 °C and 200 °C. The moulded shapes can be supplied with a pre-coated adhesive. Refer to the manufacturers/suppliers for options. A guide to adhesive compatibility is given in Appendix A. These moulded shapes are normally supplied in the styles and dimensions given in EN 4840-002. The colour is normally black. Styles and dimensions other than those specifically listed in EN 4840-002 can be available as custom items. These items are considered to comply with this standard if they comply with the property requirements listed in Table 1 with the exception of dimensions.