707-44-60070 7074460070 RING,PISTON OF D135A-2 D21Q-7-M

1. Quick Details of  seal 707-44-60070:

2. 707-44-60070 parts on group :

3. 707-44-60070 picture:

4. Service part number :

5. FAQ

Q: What kind of construction machine can part number 707-44-60070 be applied to?
A: Part number 707-44-60070 piston seal ring is applicable for excavator hydraulic boom cylinder.

Q: Could you tell me the part name and product category of 707-44-60070?
A: The part name of 707-44-60070 is piston seal ring and it falls into piston seal ring category.

Q: What is the raw material of this piston seal ring?
A: It is composed of PTFE sliding seal and NBR rubber back-up ring for reliable sealing.

Q: What is the main purpose of installing this piston seal ring?
A: It prevents internal hydraulic oil leakage inside the cylinder to maintain stable cylinder thrust.

Q: Which position of the hydraulic cylinder is this piston seal ring installed on?
A: It is assembled in the piston groove of excavator boom hydraulic cylinder.

Q: What working temperature range can this piston seal ring withstand?
A: It can work normally within the common temperature range of hydraulic oil for excavators.

Q: What should we pay attention to during installation of this seal ring?
A: Avoid sharp edges scratching the PTFE surface when putting it into the piston groove.

Q: What failure sign can we observe when this piston seal ring is damaged?
A: The boom will sink gradually and the digging force of the excavator will decrease.

Q: Is this piston seal ring sold separately or supplied as part of a seal kit?
A: It can be sold individually, and it is also available as one component of full seal repair kit.

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