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Made of Nitrile this is a replacement diaphragm for Edson Models 220 Power Pumps and Models 217, 254, 256 and 258 Manual Pumps. Nitrile is an elastomer with very good dynamic strength and is highly resistant to the effects of oils and general waste products.
[custom-data] Replacement Diaphragms & Valve Assemblies - Data Sheet [/custom-data]