AISI 316L stainless steel body. No visible screws. GORE® valve to prevent condensation. Subsequently the product is electropolished creating a barrier against external atmospheric agents thus resulting in a superior protection against corrosion in saline environments well above industry standads. Before fixing the diffuser on the Platek products a Pre-treatment using an atmospheric pressure plasma process is carried out on the surface. The process activates the ionic load on the surface  exactly where it is needed, thus promoting the best silicone grip possible and removing any residual release of agents for a longer lasting seal. The next steps are the coating of silicone and the assembly of the diffuser on the lighting fixture, with an automated process to guarantee the perfect sealing of the lamp.