A sealing assembly insertable between a first and a second mechanical member relatively moving in linear reciprocating manner, in particular insertable between a rod and a guiding bush of a shock absorber, comprising: a sealing ring made of an elastomeric material and comprising at least a first and a second elastically deformable annular sealing lip, which extend at least in part axially and radially overhanging from the sealing ring, the first lip starting from a first axial end of the sealing ring and the second lip starting from a second axial end of the sealing ring, opposite to the first end; and a reinforcing ring integrally coupled to the sealing ring, radially on the side of the first and second sealing lip (8,9); wherein, in combination: i)- the reinforcing ring is integrally coupled in one piece with the sealing ring, on the exterior of the sealing ring and on the side of a first radial lateral surface of the sealing ring facing the same side as the overhanging extension of the first and second lips (8,9); ii)- the reinforcing ring has dimensions such that it couples in use in sliding manner with the first member in order to guide the relative sliding between the first and the second member; iii)- the sealing ring has dimensions, at least at the reinforcing ring, such that to be coupled by interference in use with the second member; the first and the second annular lips (8,9) being adapted to cooperate, in use with the first member, both in sliding manner, on the opposite sides of the reinforcing ring and, consequently, always one upstream and the other downstream of the reinforcing ring with respect to a relative sliding direction between the first and the second member; characterized in that iv)- the reinforcing ring having been fixed integral in one piece to the sealing ring during the step of vulcanizing, so as to define with the sealing ring a single, indivisible, inseparable component; v)- the reinforcing ring having an annular projection which radially protrudes on the inside of the sealing ring, but by a radial extension which is smaller than the overhanging radially extension of the first and second lips (8,9); the annular projection being delimited, on the side of the first and of the second lips, by a radially innermost lateral cylindrical sliding surface slidingly coupled in use with the first member; vi)- the annular projection and its respective lateral cylindrical surface, slidingly coupled with the first member in use, have an axial extension which is smaller than that of the rest of the reinforcing ring, which is delimited by: a first lateral cylindrical surface from which the annular projection radially overhangs and which is arranged flushed with the first radial lateral surface of the sealing ring; by a second cylindrical lateral surface opposite to the first; and by a pair of opposite frontal flat surfaces (23,24); the reinforcing ring being entirely embedded in the sealing ring, except for the annular projection and the first cylindrical lateral surface from which the annular projection protrudes. i)- the reinforcing ring is integrally coupled in one piece with the sealing ring, on the exterior of the sealing ring and on the side of a first radial lateral surface of the sealing ring facing the same side as the overhanging extension of the first and second lips (8,9); ii)- the reinforcing ring has dimensions such that it couples in use in sliding manner with the first member in order to guide the relative sliding between the first and the second member; iii)- the sealing ring has dimensions, at least at the reinforcing ring, such that to be coupled by interference in use with the second member; the first and the second annular lips (8,9) being adapted to cooperate, in use with the first member, both in sliding manner, on the opposite sides of the reinforcing ring and, consequently, always one upstream and the other downstream of the reinforcing ring with respect to a relative sliding direction between the first and the second member; characterized in that iv)- the reinforcing ring having been fixed integral in one piece to the sealing ring during the step of vulcanizing, so as to define with the sealing ring a single, indivisible, inseparable component; v)- the reinforcing ring having an annular projection which radially protrudes on the inside of the sealing ring, but by a radial extension which is smaller than the overhanging radially extension of the first and second lips (8,9); the annular projection being delimited, on the side of the first and of the second lips, by a radially innermost lateral cylindrical sliding surface slidingly coupled in use with the first member; vi)- the annular projection and its respective lateral cylindrical surface, slidingly coupled with the first member in use, have an axial extension which is smaller than that of the rest of the reinforcing ring, which is delimited by: a first lateral cylindrical surface from which the annular projection radially overhangs and which is arranged flushed with the first radial lateral surface of the sealing ring; by a second cylindrical lateral surface opposite to the first; and by a pair of opposite frontal flat surfaces (23,24); the reinforcing ring being entirely embedded in the sealing ring, except for the annular projection and the first cylindrical lateral surface from which the annular projection protrudes.