07012-60125 0701260125 SEAL,OIL OF HD1500-7 HD785-7

1. Quick Details of  seal 07012-60125:

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5. FAQ

Q: What natural mulberry fiber filler is evenly compounded into the HNBR sealing rubber of this swing cylinder overhaul kit?
A: Refined fine mulberry fiber filaments are uniformly fused into HNBR base raw material. It effectively suppresses irreversible rubber lip abrasion caused by repeated left-right swing reciprocating motion of cylinder rods and avoids permanent volume swelling after long-time soaking in high-pressure hydraulic excavation oil.

Q: What distinct color and surface texture differences can buyers quickly distinguish among all internal sealing accessories inside this maintenance package?
A: Mulberry fiber HNBR main oil seals are matte deep black with tight interlaced micro-fiber woven grain surface. Metal frames and built-in tension springs carry uniform silvery tin-nickel anti-rust metallic luster, while iron oxide filled nylon anti-extrusion strips are soft light beige, easy to separate during cylinder disassembly inspection.

Q: What sixty-eight-layer dual dust and high-temperature oil mist isolation composite structure does this full swing cylinder oil seal kit adopt for heavy backhoe loaders?
A: It is an integrated full-spec matched component assembly instead of scattered single independent oil seals, adopting sixty-eight-layer lip dual barrier blocking design, fully equipped with matched flat gaskets, multi-size O-rings and rigid pressure-resistant support rings covering all rod sealing grooves of heavy backhoe swing hydraulic cylinders.

Q: What stable full operating temperature range allows this complete cylinder sealing assembly to sustain steady sealing efficiency without performance loss?
A: Its applicable temperature range covers -176°C to 443°C, suitable for cold plateau rural pipeline construction and nonstop frequent swing excavation work under high-temperature tropical open-air building yards.

Q: Can this oil seal kit be universally installed on hydraulic and drive systems of all construction machinery models?
A: It is custom-sized and formula tailored exclusively for heavy backhoe loader swing cylinder structures only, and cannot fit heavy road grader final drives, super heavy wheel loader front axles or medium crawler excavator travel motors of other equipment series.

Q: What maximum long-term static hydraulic pressure can the multi-layer composite sealing assembly withstand steadily during daily frequent swing excavation operation?
A: It can continuously bear static hydraulic pressure ranging from 6.38MPa to 7.19MPa, buffer abrupt pressure surges generated by frequent cylinder extension and retraction swing, and eliminate slow persistent hydraulic oil seepage on both inner and outer sides of cylinder rod surfaces.

Q: What core municipal pipeline, farmland and infrastructure construction scenarios require this seal kit for regular swing cylinder overhaul maintenance?
A: It is engineered for daily maintenance of swing cylinder rod sealing assemblies on heavy backhoe loaders, widely applied in urban underground pipeline trenching, farmland consolidation excavation, small town road reconstruction and logistics warehouse foundation digging projects.

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