Gglands - IP68. Made in AISI 316L (X2CrNiMo17-12-2 1.4404 UNI EN 10088-1) stainless steel. The tightening of the nut causes the seal to deform so that, in addition to guaranteeing an IP68 watertight seal of 5 bars pressure, it also ensures exceptional cable retention. A further o-ring seal located in a appropriate shaped housing also maintains the levels of water tightness at the thread. They have excellent resistance to corrosion. ISO metric thread in compliance with CEI EN 60423 standard.