4708913 Original Weather Strip for Loader ZW120-5B

Hitachi original loaded confidential seal (universal part number: 4708913) is a key component used to ensure the sealing of the cab and equipment compartment. This original spare part is mainly suitable for multiple Hitachi wheel loaders, commonly found in the joint parts of the cab doors, windows, engine hood, or air conditioning system of models such as ZW140, ZW180, ZW220, ZW250, ZW310, ZW330, ZW370-G, ZW550-G. Due to slight differences in sealing strips between different models and installation positions, before ordering and replacing, it is necessary to refer to the original parts manual or electronic parts catalog (EPC) for final verification based on the specific model of the equipment, the year of manufacture, and the exact location of the required seal (such as left front door, right front door, sunroof, etc.), to ensure that its cross-sectional shape, length, buckle design, and material are completely matched and achieve the best sealing effect.

This sealing strip is the first barrier to prevent dust, rainwater, noise, and heat exchange from entering the cab or equipment compartment. Its core function is to rely on its own elastic deformation to fill the gaps between sheet metal parts and glass or door frames, achieving air tightness, water tightness, and sound insulation. As an original component, it is made of high-quality elastic materials, usually ethylene propylene diene monomer (EPDM) or silicone rubber, which have excellent weather resistance (resistance to ultraviolet rays and ozone), high and low temperature resistance (working temperature range usually up to -40 ℃ to+120 ℃), aging resistance, compression resistance, permanent deformation, and certain oil resistance. Its structural design typically includes hollow sponge tubes to provide good resilience, as well as sturdy metal or plastic skeletons to facilitate installation and fixation.

The maintenance core of sealing strips lies in regular inspection, cleaning, and preventive replacement. It is recommended to check all sealing strips for cracking, hardening, deformation, detachment, or obvious compression permanent deformation every month or every 250 working hours. Focus on inspecting the frequently opened and closed doors, engine hood edges, and corners. When cleaning, use mild neutral soapy water or specialized rubber protectant, wipe with a soft cloth, and avoid using gasoline, organic solvents, or strong acid or alkali cleaners to accelerate rubber aging. After each cleaning, a small amount of silicone lubricant or specialized rubber maintenance agent can be applied to the surface of the sealing strip to restore elasticity and prevent adhesion.