Part #90870 Kompac III Seal Backing Kit is a complete rebuild kit that fits AD-500 and AD-506 Adast Kompac IIIs to replace all bent/worn/stretched/malformed backing componets that cannot be repaired in a timely manner.

If your seal backing plates are not aligned properly to where they hold your seals in perfect alignment to the form rollers' ends, don't fight them, rebuild them both with 'all new parts', then keep them well lubricated and clean!