Zhejiang Explosion-proof Pipe Fitting Wholesaler - Price, Factory Price, Sales, Contact Phone - Where to Find It? [Leqing Zhenlei Explosion-proof Electrical Equipment Co., Ltd.] The plug is also known as a plug, plug head, or throat plug, used in water, oil, gas, and other media. 1. Application Range: Zones 1 and 2, Class II A~II C gas environments, and/or Zones 20, 21, 22 combustible dust areas; 2. Indoor and Outdoor (IP65, IP66); 3. Used in hazardous areas such as chemical industry, oil refining, oil extraction, offshore oil platforms, cruise ships, pharmaceuticals, etc., for connecting electrical equipment or steel pipe wiring in situations with high bending difficulty or vibration; 4. This product features easy and quick installation, wide application range, and high reliability. Made of carbon steel, with zinc-plated surface or made of stainless steel, the plug is a type of mechanical fastener, serving the purpose of sealing.