6640 Polyester film/polyaramide fiber warqad laminate dabacsan (NMN) waa saddex lakab oo dahaaran oo isku dhafan oo dabacsan kaas oo dhinac kasta oo ka mid ah filimka polyesterka (M) uu ku xiran yahay hal lakab oo ah polyaramide fiber paper (Nomex). Waxa kale oo loo wacaa sida 6640 NMN ama F class NMN, NMN insulation paper iyo NMN insulating warqad.