Prop boots hydro -cylinder

The utility model discloses a prop boots hydro -cylinder, include: cylinder body, cylinder bottom, piston rod and piston, be equipped with the uide bushing subassembly between the front end of cylinder body and the piston rod, the uide bushing subassembly is in with the complex including the uide bushing body of fixing on the cylinder body copper sheathing on the uide bushing body internal surface, uide bushing body and copper sheathing formula structure as an organic whole, V -arrangement combined seal ring still has on the inner wall of uide bushing body, V -arrangement combined seal ring is located the copper sheathing front portion, the uide bushing subassembly is still including fixing the gland on the uide bushing body, the gland compresses tightly V -arrangement combined seal ring before the copper sheathing on the tip, be equipped with the dust ring and sealing washer for the pole between the inner wall of gland and the piston rod, be equipped with guidance tape, a sealing washer for the nonoculture and a two effect sealing washer between piston and the cylinder body inner wall. In this way, the utility model has the advantages of simple and reasonable structure, has the advantage that the uide bushing bearing strength is high, whole sealing performance is good.