Elaflex TW brass crown ring

Elaflex couplings type TW-K, manufactured acc. to DIN 28450/EN 14420-6. TWK 50 + TWM 50 = MK 50 TWK 80 + TWM 80 = MK 80 Materials: Brass. Seal: Generally, in brass couplings, seal VD are always used as seal for thread and seal PD as seal for the coupling. In stainless steel couplings, seal TD are used as seal for thread and seal HYD as seal for the coupling. PD = Nitrile (Perbunan). VD = Vulkollan. TD = Teflon. HYD = Hypalon.