Lock nut not supplied. Lock nuts are available separately. Lapp IP68 Metric Round Top Cable Gland. The M12 Lapp black polyamide Skintop ST-M cable glands are designed for the most demanding cleaning procedures for industrial machinery with high-pressure cleaners and hot water. Features and Benefits. Provides optimal strain relief. Vibration protection. Wide temperature range. Minimal assembly time. Wide clamping range. Good oil resistance. Typical Applications. Use the Skintop ST-M IP68 cable gland for many applications where there are a lot of wires or cables, and little space such as in machine and equipment manufacturing.