Extra or Spare Ameda Silicone Diaphragm fits all Ameda breast pumps are great as a replacement or extra. Ameda Manufacturer Diaphragms are BPA & DEHP-Free. Choose 1 for $3.99, 2 for $7.49 or 2 in retail packaging for $7.99. Mommy Gear purchases Ameda manufacturer's parts in bulk and offers them in our packaging to save you money or choose manufactuer's retail packaging if you prefer.