Komatsu Bucket Cylinder Seal Repair Kit 721-98-01990 7219801990 For PC360LCI-11 D375AI-8E0 PC390LCI-11

Product Show:

Related Part:

Product Description:

Hydraulic cylinder seal kits are used to seal the gap between different parts of the hydraulic cylinder. The function of hydraulic cylinder seal kits is to prevent oil leakage, to assure the working pressure of the hydraulic system, to maintain its power.

There are regularly three cylinders for the excavator, boom cylinder, arm cylinder, bucket cylinder.

Boom cylinder is the one (or the two) near the cabin. Usually, there is one piece boom cylinder for the small excavator under 10-tun; the bigger excavator's two pieces boom cylinders. But there is an exception too when the driver will remove one piece for a special purpose, say at some particular working place, it is convenient to work by one cylinder. Soft remind: all refit job should be operated by an experienced technician.

Arm cylinder is the top one, and it's usually be called as top cylinder;

Bucket cylinder is the one that connects and controls the bucket.

The advantages of the seal:

From the perspective of the shape of the o-shaped rubber seal, its manufacturing process is much simpler than that of the same type of seal components, first of all, the design and molding are relatively simple, the film is easy to lift, the assembly is convenient, and the It is found that the rupture and damage, the compression recovery is large, the permanent deformation is small, and the mechanical strength is appropriate;

After being affected by the medium, the mechanical strength changes little, the heat and cold resistance, the vibration absorption is good, the friction factor is small, that is, the wear resistance is good, the leakage loss is small, its volume is small, the change is small, and it has excellent stability in power hydraulics. The seal is not affected by power, it is difficult to dissolve, soften and harden, the metal contact does not interact, and the price is cheap and low cost.