TS375C Retaining RingTS375C Retaining Ring for pre 1999 Better Packages BP555 s/l. These machines are discontinued but we still have parts. If your current tape dispenser is on its way out, then give us a call at 800-311-6167 to discuss your options. We will buy back your old machines, accept trade ins and will still service these old ones. See how a brand spanking new BP555 can upgrade your shipping operation.