1、Better Sealing: By transforming the seal and making the size smaller than the gland hole, the seal can be easily installed. 2、Easy Installation: The installation kit for hydraulic U shaped cup twisting device is very convenient in daily life, saving you time. The hydraulic cylinder piston rod is a fast and safe flexible rod sealing installation tool. 3、Large Rod Parameters: The diameter of the large rod is 70‑165mm, that is, a 2.75‑6.53in rod for pressing holes, with a maximum cross sectional area of 10mm. 4、Small Rod Parameters: The diameter of the small rod is 22‑40mm, that is, a 0.8‑1.5in rod, with a maximum cross sectional area of 6mm. 5、Medium Rod Parameters: Medium rod diameter is 40‑70mm, that is, a 1.5‑2.75in rod hole, with a maximum cross sectional area of 8mm.