NEMA SEALING CLASSIFICATIONS
In North America intrusion protection is classified according to the standards of NEMA (National Electrical Manufacturers Association). If an Industrilas product is rated to seal at NEMA 4 it has either been tested by an independent laboratory, or the product is so similar in construction to another tested product that it could safely be classified as NEMA. IP65 roughly corresponds to NEMA 4, but the ratings are not directly equivalent between the two standards.
is primarily used on decorative surfaces and for corrosion protection, but also as a substrate for chrome, gold and silver plating. The baths usually consist of sulphates, chlorides and boric acid (= Watt’s solution).