Explosion-proof slip ring have more safety and more high reliability, it was designed for explosive condition. Fit for oil platform, explosive material packing, agro-product processing, coal mine and spray finishing, etc
     Slip rings passing the electricity by rub between the brush and rings, so it is no possible to prevent the spark in in theory, Normal slip rings only pay attention on its electric property,but less in protection. So it is very danger to using normal slip rings in explosive condition.
NEX slip ring was designed to set up at the end of the shaft,or in the hole of the shaft. it have a samll size, it can be used for weak signal or high current.