Quality of manufacture
"What are Simple Pumps made of?"
The Simple Pump is constructed of durable materials that will not easily wear out. The pump assembly, pump head, pump cylinder, and check valves are all stainless steel. The pump rods are aerospace-quality fiberglass with fused stainless steel ends. (So all metal parts in contact with water are lead-free stainless steel.) And the drop pipe is Polyvinyl Chloride (PVC), Schedule 80. Finally, the pump's lever handle assembly is solid, aircraft-grade T6061 aluminum.
"What parts will wear out?"
There are working u-cup seals at various locations in the pump assembly. These are made of a durable rubber products referred to as "Buna-N" and "Urethane". One spare seal kit comes with the pump. If ever needed, replacement u-cup seals can be purchased directly from Simple Pump. Unless your water is unusually gritty, these seals should last for many years.
"Is there any lead in the Simple Pump?"
The pump assembly and its component parts are manufactured from lead-free materials and are Safe Drinking Water Act compliant. Simple Pump components are also in compliance with the even more stringent California Proposition 65 requirements.