... TUV etc, and we make full line of cable gland, like PG, M,NPT,G. thread..... speci 1.Material: ... and D are made of nitrile butadiene rubber(NBR)2.Thread specificaiton: Metric ,PG,G,NPT3.Working Temperature : -40 ... : Special design of clamping die and rubber part,large range in clamping cable, ultra-strong stretching resistance, waterproof, ... that can be designed at request. nylon cable gland of PG type