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Comparison of Metal Connectors and Plastic Connectors

Oct. 20, 21

Engineers pointed out that the construction of waterproof connectors are generally divided into: metal contact conductor and shell metal. On the market, we often encounter connectors are metal waterproof connectors, plastic connectors, both of which have their own market.

What is the difference between metal waterproof connectors and plastic connectors? The engineers will give you a general introduction to the differences between metal waterproof connectors and plastic connectors. We hope that after the explanation by the manufacturer GRAND, you will have a better understanding of both.


Mechanical life

The mechanical life of a waterproof connector refers to the number of insertion and removal cycles, which is usually set at 500 to 1000 by industry standards. In order to achieve this specified mechanical life, the contact resistance, insulation resistance and voltage resistance of waterproof connectors should not exceed the specified standard value, which is not much different between metal and plastic housings.


Electrical performance

Rated voltage, rated current, contact resistance, insulation resistance, etc. are all standard values as specified for metal and plastic housings. As long as they are used in accordance with these standard values, the waterproof connectors will not be easily damaged.


Environmental parameters

The main environmental parameters are ambient temperature, humidity, rapid changes in temperature, atmospheric pressure and corrosive environments. Waterproof connectors in the use and storage, transport process in the environment has a significant impact on its performance, so the actual environmental conditions must be selected according to the appropriate metal shell will be better than plastic.


Termination method

The end connection refers to the waterproof connector male and female connector hardware contact with the wire and cable connection. Metal and plastic shells are the same, divided into welding, crimping, winding, piercing, screws. Comprehensive analysis, in addition to the need for connectors with shielding function, metal and nylon plastic shell in all aspects of performance differences are not significant. Plastic relative to the metal shell cost less, the structure is more reasonable.


Comparison of Metal Connectors and Plastic Connectors

9Pin Waterproof Extension Cable 



For more technical information about metal connectors, GRAND will continue to edit and publish them to share with you. If you need to purchase quality metal connectors related products, you can leave us a message or call directly: +86 187 5848 6780, professional engineers will answer your questions for free.


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Suzhou Grand Electronic Technology Co., Ltd. is a high-tech enterprise that produces advanced waterproof cables. It is located in Dongshan Town, Wuzhong District, Suzhou City, China, in the Jiangsu-Zhejiang-Shanghai Economic Triangle.

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