707-99-78680 7079978680 Bucket seal kit of PC750SE-6 PC800SE-7-M1

1. Quick Details of  seal 707-99-78680:

2. 707-99-78680 parts on group :

3.  707-99-78680 picture:

4. Service part number :

 
5. FAQ

Q: What heavy‑duty construction equipment does part number 707‑99‑78680 match for maintenance work?
A: Part number 707‑99‑78680 cylinder seal kit is specially produced for large excavator bucket cylinder assembly repair and complete overhaul service.

Q: What sealing performance can part number 707‑99‑78680 bring to the bucket cylinder hydraulic loop?
A: Part number 707‑99‑78680 cylinder seal kit maintains stable hydraulic pressure during heavy‑load digging and bucket dumping operations, reduces internal leakage under massive digging impact, and stops coarse gravel and mining mud from entering cylinder interior and damaging precision rod surfaces.

Q: What raw materials compose this bucket cylinder seal kit?
A: Dynamic reciprocating rod seals adopt high‑strength PU polyurethane, static sealing O‑rings use aging‑resistant HNBR hydrogenated nitrile rubber, and PTFE heavy‑load backup rings bear big lateral force and prevent seal extrusion under peak pressure surges.

Q: What color characteristics do these sealing spare parts possess?
A: PU sealing components are glossy deep black, HNBR rubber parts are dark matte black, PTFE heavy‑load backup rings are milky off‑white.

Q: What sealing accessories are contained inside this complete repair kit?
A: It includes piston seals, rod seals, pressure buffer rings, PTFE backup rings, dust wiper seals and multiple groups of different‑size O‑rings for cylinder reassembly.

Q: What sealing accessories are packed inside this whole repair kit?
A: It includes piston seals, rod seals, buffer rings, PTFE backup rings, dust wiper seals and multiple specifications of matching O‑rings for cylinder reassembly.

Q: Where is this cylinder seal kit assembled on articulated dump truck?
A: These sealing components are fitted inside cylinder barrel and cylinder head, surrounding piston and reciprocating hoist cylinder rod.

Q: What sealing accessories are contained within this whole repair kit?
A: It includes piston seals, rod seals, pressure buffer rings, PTFE anti‑extrusion rings, dust wiper seals and multi‑size matched O‑rings for cylinder reassembly.

Q: Can the sealing combination stop internal leakage and external oil seepage effectively?
A: Multi-stage sealing structure greatly reduces the risk of hydraulic oil leakage.

Q: Can this product prevent hydraulic oil leakage effectively?
A: The precise size design effectively reduces internal leakage and external oil seepage.

Q: What construction scenarios often require this arm cylinder seal kit for regular maintenance?
A: It is widely used for maintaining mini excavators working on villa foundation projects, landscape engineering, pipeline trenching and rural road reconstruction.

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