SEAL FEED is an intensive care product for rubber seals and plastics. Protecton is suitable for new seals and plastic parts. For older or weathered seals and plastic parts, Seal Feed is the right choice. In Central and Northern Europe, 1-2 applications per year are sufficient. In Texas, Arizona, etc. in the USA, or in the Middle East, Seal Feed will be used monthly. In other words: It depends heavily on the climate!