UNE-EN 4811:2017 Aerospace series - Flange couplings - Gasket seal with fluorocarbon seal on aluminium plate with 4 fastening holes - Inch series (Endorsed by Asociación Española de Normalización in July of 2017.)
2017UNE-EN 4811:2017 Aerospace series - Flange couplings - Gasket seal with fluorocarbon seal on aluminium plate with 4 fastening holes - Inch series (Endorsed by Asociación Española de Normalización in July of 2017.)