NF EN 751-3

Sealing materials for metallic threaded joints in contact with 1st, 2nd and 3rd family gases and hot water - Part 3 : unsintered PTFE tapes and PTFE strings

Le présent document spécifie des exigences et méthodes d'essai applicables aux bandes et cordons produits à partir de polytétrafluoroéthylène (PTFE) vierge utilisés avec des raccords filetés métalliques. Il définit deux classes de bandes et de cordons en PTFE - différant principalement par leur épaisseur et leur masse surfacique - pour des filetages à pas fins (F) et des filetages à pas gros (G).

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