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Model ZLR-1205 Double Concentric Cartridge SealThe first standard production cartridge mechanical with concentric seal technology.Concentric seal technology was first introduced by Environamics in 1991. Keeps both seals closer to bearing for more stable operation in high vibration and high deflection applications. The cooling and lubrication of the seal faces is much more efficient in a concentric seal than with any other form of double seal. Since both seals are external to the seal chamber, the Double Concentric Seal can be applied to pumps, mixers, and other equipment that previously had no room for a double seal.
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