Sealing Device in Particular for Shock-Absorber Stems

Sealing device including a first seal and a second seal each having an annular support formed in the manner of a sleeve and delimited by a first and second face which are situated opposite each other and a first and second annular sealing elements; wherein the first and second annular sealing elements are independent and separate from each other and are fixed integral with a first portion and a second portion of the annular support which are different from each other and are made of a first and second elastomer mix, the second elastomer mix being different from the first mix and having a greater hardness and higher elastic modulus; at least one annular sealing element being provided radially on the inside with at least one annular lip which extends radially and axially in cantilever fashion from a first end of the annular support.