US Seal Start Capacitor [64-77 MFD 110-125V] (BC-64) is a replacement start capacitor used in compatible pool and spa pump motor applications. Start capacitors provide the electrical boost needed to help certain motors start properly, and a failed capacitor can cause humming, hard starts, or a motor that will not reliably turn over. This US Seal Manufacturing capacitor is listed with a 64-77 MFD 110-125V rating, making it important to compare both the MFD range and voltage with the existing component before ordering. Replacing the capacitor with the correct specification helps support proper motor startup performance and protects the rest of the equipment from mismatched electrical components. Replacement start capacitor for compatible pump motor service Helps restore proper startup performance when the original capacitor fails Listed electrical rating supports accurate part matching Useful for pool and spa equipment repair professionals Confirm MFD, voltage, and part number BC-64 before installation