707-52-91151 7075291151 Bushing OF PC1250-11 PC1250-8R

1. Quick Details of  seal 707-52-91151:

2. 707-52-91151 parts on group :

3. 707-52-91151 picture:

4. Service part number :

5. FAQ

Q: What raw materials make up this piston seal ring assembly?
A: The primary sealing ring adopts poplar fiber reinforced HNBR elastomer, equipped with silicon filled PTFE sliding ring and rigid modified POM back-up ring for matching assembly.

Q: Where is this piston seal ring installed on machinery?
A: It fits into piston groove inside hydraulic cylinder, blocks cross‑chamber oil flow and maintains stable working pressure for boom and bucket cylinder.

Q: Can this seal ring sustain heavy‑load reciprocating movement during mining excavation?
A: Yes, it can withstand frequent pressure surges and reciprocating friction during rock breaking, lifting and swing working cycles.

Q: Does each individual seal come with matching auxiliary parts?
A: Yes, every single piston seal ring is supplied with corresponding elastic energizer for complete piston assembly.

Q: What temperature range can this sealing part keep stable performance?
A: Reliable sealing capability ranges from ‑26℃ up to 145℃ under harsh open‑pit construction environment.

Q: What prominent strengths does poplar fiber reinforced HNBR have compared with conventional rubber materials?
A: It has excellent shock resistance and stable compression resilience, adapting to frequent angle adjustment movement of grader tilt cylinders.

Q: What engineering projects commonly require replacement of this piston seal ring?
A: It serves routine maintenance of hydraulic cylinder piston sealing assemblies on medium crawler excavators, widely used in urban infrastructure, highway subgrade construction, small quarry loading and residential foundation excavation projects.

6. Exhibition and Wearhous

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