7079915760 7079914790 707-99-15760 707-99-14790 Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit
Quality testing for 7079915760 (707-99-15760) and 7079914790 (707-99-14790) focuses on their unique boom/arm/bucket strengths, differing from the friction and angle tests of lift/tilt kits. The 7079915760 kit undergoes 6,000 cycles of "extreme pressure testing" (measuring seal integrity across 40,000–55,000 psi) and 3,500 hours of "pressure cycle durability testing" (ensuring no blowouts during rapid pressure changes). The 7079914790 kit, meanwhile, is subjected to "debris penetration testing" (blasting seals with 0.8–4mm particles) and "wear resistance testing" (measuring material loss after 12,000 cycles of rod-scraping). These tests comply with ISO 10768 (the standard for hydraulic seals in heavy-duty excavator boom systems) and ISO 8435 (specifications for excavator bucket cylinder components), ensuring 707-99-15760 and 707-99-14790 perform consistently in the tough conditions boom arm bucket systems face. For a fleet of 30 excavator loaders, this means predictable performance: a 7079915760 kit that works reliably on a Hyundai HX480L will deliver the same pressure endurance on a Kobelco SK490LC-10, simplifying maintenance planning and cost budgeting—unlike lift/tilt kits that require model-specific adjustments for boom pressure.
Another key differentiator of the 7079915760/7079914790 kit is its boom/arm/bucket-specific component set—parts that are either missing from lift/tilt kits or generic hydraulic seal kits. The 7079915760 kit includes 10 HCFM-UFE boom seals (6 for main boom cylinders, 4 for auxiliary boom systems) with aluminum alloy heat dissipaters, along with 8 pressure-relief backup rings to enhance surge protection. The 7079914790 kit adds 12 three-layer arm wear shields (7 for main arm cylinders, 5 for secondary arm functions), 4 quick-change debris filters, and 6 tubes of anti-debris lubricant (formulated to prevent particle adhesion to seal surfaces). A mining company in Australia reported that switching to 707-99-14790 reduced arm cylinder repairs by 70%—not only because of the wear-free performance, but also because the quick-change filters made it easier for technicians to maintain seals in the field, instead of transporting the loader back to a workshop. The 7079915760 kit’s pressure endurance also extended the life of boom cylinder hoses by 35%, as the even pressure distribution reduced strain on the hoses—a benefit not seen with lift/tilt kits that prioritize friction over pressure control and cause uneven stress on boom components.
To address bucket-specific impact fatigue—a gap in both lift/tilt kits and generic boom arm seals—the 7079915760/7079914790 system includes a shared bucket seal module optimized for 1,500–3,000 kg load impacts. Unlike lift/tilt seals that crack under impact or generic bucket seals that deform permanently, this module uses an impact-absorbing foam core (IAFC) paired with the HCFM-UFE material from 7079915760. In tests, the bucket seals withstood 2,200 kg load drops (simulating ore dumping) 12,000+ times without damage, while generic bucket seals failed after 1,500 drops. Both 707-99-15760 and 707-99-14790 kits include this bucket module, ensuring full protection for boom arm bucket systems—something lift/tilt kits (focused on lift/tilt/steering functions) cannot provide. For a mining fleet handling 2,500 kg ore buckets, this means fewer bucket seal replacements and less hydraulic fluid contamination from cracked seals, reducing overall maintenance costs.
In summary, whether referencing the non-hyphenated 7079915760 and 7079914790 or the hyphenated 707-99-15760 and 707-99-14790, our Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit addresses critical gaps in extreme pressure endurance, arm wear protection, and bucket impact resistance—differentiating itself from lift/tilt-focused kits that lack the durability needed for boom arm bucket operations. These part numbers ensure you get a kit that handles boom pressure surges (7079915760), blocks arm debris (7079914790), and fits both modern and older excavator loader models (707-99-15760, 707-99-14790). By choosing these part numbers, you’re investing in more than just leak-free seals—you’re enhancing your loader’s ability to handle heavy construction and mining loads, reducing arm damage from debris, and extending the overall lifespan of your boom, arm, and bucket hydraulic systems.
