FIELD: machine building.SUBSTANCE: gas spring includes slide (2) located inside cylinder (1) housing. Guide sleeve (3) has an axial section at the main end section of cylinder (1) housing with the passage through which slide (2) is installed. Dust-proof seal (4) has projection (4a) being in sliding contact with slide (2). End seal (1b) at an open end section of cylinder (1) housing is in contact with an external end of guide sleeve (3). Dust-proof seal (4) is built inside guide sleeve (3) as its integral part on its external end section with possibility of being moved of floated in radial direction inside guide sleeve (3).EFFECT: higher sealing reliability.4 cl, 5 dwg
