This Spares Kit includes (2) 25274 Neoprene Diaphragms, (4) 160-G-302 Flapper Valve Assemblies. The replacement elastomer parts are for the Edson Double Diaphragm Pump 2500 Series, 25000 Series and the 25200 Series. Neoprene a synthetic polymer similar to rubber, it is highly resistant to oil, heat, and weathering, ideal for pumps.
160-G-302 - Double Diaphragm Pump | Flapper Valve Part Breakdown - Data Sheet
2500 25000 25020 25060 Spares Kit - How to replace Diaphragms & Valve Assemblies
25200 25220 25260 Spares Kit - How to replace Diaphragms & Valve Assemblies