This video deals with installation of the secondary few supply sealing washers. If you purchased directly from us after Aug 2014 your tank should have had these installed already. If you purchased from us prior to August 2014 you should have received a seal kit in the mail (sent to the address provided at time of purchase). If you purchased through a dealer and your tank does not have the seals installed, contact them as they have been supplied with kits for you (free of charge). If you need seals, contact us and we will send you a kit at no charge.