1.1 ,This specification covers the general requirements for nylon stuffing tubes and packing assemblies. Nylon stuffing tubes are intended for making electric cable penetrations in marine shipboard enclosures for electrical equipment. The following types are suitable for both thin-wall enclosures up to 5 mm (³/₁₆ ,in.) thick and thick-wall enclosures, bulkheads, and decks of 5 to 19 mm (³/₁₆ ,to ³/₄ ,in.) thick.