Seal & Spacer Kit for Fleck 5600, 9000 & 9100 valves. (Top Seals & Spacers 9000, and 9100 Valves.) The new 559PE material has 3 times the Chloramine resistance of the older FL60125-10 Silicone Seal Kits. For easy identification, the 559PE EPDM seal will have a Green Dot on the Edge/Surface of the Seal. Old Silicone seals can be easily identified by an Orange Dot on the Edge/Surface of the Seal. 5 Seals & 4 Spacers included with each Kit (Not sold Separately).