... CE TUV etc, and we make full line of cable gland, like PG, M,NPT,G. thread..... speci 1.Material: parts A ... ,C,E are made of UL approved nylon PA66,parts B ... and D are made of nitrile butadiene rubber(NBR)2.Thread specificaiton: Metric ,PG,G, ... as special colors that can be designed at request. nylon cable gland of PG type