707-99-69525 7079969525 Arm Cylinder Service Kit For PC400-6C PC400LC-6Z KOMATSU Heavy Duty Boom

707-99-69525 7079969525 Arm Cylinder Service Kit For PC400-6C PC400LC-6Z KOMATSU Heavy Duty Boom

Return Policy & Feedback::

• Once you buy our item, you agree to the following return policy:

(1) We accept return, but please contact us before make the decision.

(2) We only accept exchange if the item is received incorrect or defective.

(3) Return shipping costs are the responsibility of customers.

(4) All returns must be whole and complete as shipped to the customers.

• Our duty is to provide you high quality product and service, if you are satisfied with us, please leave us a positive feedback, it’s our power to make better.

Seal ClassifiC.A.Tion:

• According to whether the seal is in contact with its relative moving parts, it can be divided into contact seal and non-contact seal; according to the seal and contact position, it can be divided into circumferential seal and end face seal. End face seal is also called mechanical seal. The centrifugal seal and spiral seal in the dynamic seal are sealed by powering the medium when the machine is running, so they are sometimes called dynamic seals.
• Static seal: There are three main C.A.Tegories: gasket seal, sealant seal and direct contact seal. According to the working pressure, static sealing can be divided into medium and low pressure static sealing and high pressure static sealing. Medium and low pressure static seals usually use softer and wider gasket seals, while high-pressure static seals use harder metal gaskets with a narrow contact width.
• Dynamic seal: It can be divided into two basic types: rotary seal and reciproC.A.Ting seal.

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