The 501/453/Universal cable gland provides two independent seals on armoured, elastomer and plastic insulated cables susceptible to damage relating to cold flow. The first is a flameproof diaphragm seal on the inner cable sheath, the second an IP seal on the outer sheath. Manufactured in Brass (standard), Nickel Plated Brass, 316 Stainless Steel or Aluminium. Brass NPT entries are nickel plated as standard.