A technical data sheet showing the hose's construction (number of layers, reinforcement type and material), burst-pressure test results, operating pressure range, and material composition is the most useful documentation. If the burst pressure is below 27.6 MPa, that test result directly supports classification here rather than in the high-pressure heading. A manufacturer's letter confirming the product is not rigid and does not include fittings as supplied further narrows the classification to this heading.

Hose with layers of different materials — such as a plastic inner tube bonded to a textile braid and an outer plastic jacket — is considered 'combined with other materials' and is excluded from the unreinforced headings. If the burst pressure is below 27.6 MPa, such composite hose typically falls here in the NES heading. The essential character of the product (plastic as the primary functional material) must still be established to keep it within the plastics hose headings rather than reclassifying it as textile hose or rubber hose.