7079956750 7079977630 707-99-56750 707-99-77630 Boom Arm Bucket Hydraulic

MOQ： 20
Price： Negotiable
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Payment Terms	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability	3000
Delivery Time	Within 3-15 days after getting your desposit
Packaging Details	PP Bag Inside,Carton Box Outside
Style	Hydraulic
Oem Service	Available
After Warranty Service	online support
Service	OEM Customized Services
Pressure Resistance	Up to 5000 PSI
Odm	Available
Packing	Paper box
Shipping Method	By sea, by air, by express
Port	China
Applied Part	Excavator Arm Cylinder
Package Detail	Bag or box
Tear Resistance	Excellent
Star Ring	A-8501
Includes	All Necessary Seals and O-Rings
Longevity	Long-lasting
Model Number	7079956750 7079977630 707-99-56750 707-99-77630 Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit
Certification	ISO9001
Place of Origin	CHINA

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Product Specification


Payment Terms	L/C, D/A, D/P, T/T, Western Union, MoneyGram	Supply Ability	3000
Delivery Time	Within 3-15 days after getting your desposit	Packaging Details	PP Bag Inside,Carton Box Outside
Style	Hydraulic	Oem Service	Available
After Warranty Service	online support	Service	OEM Customized Services
Pressure Resistance	Up to 5000 PSI	Odm	Available
Packing	Paper box	Shipping Method	By sea, by air, by express
Port	China	Applied Part	Excavator Arm Cylinder
Package Detail	Bag or box	Tear Resistance	Excellent
Star Ring	A-8501	Includes	All Necessary Seals and O-Rings
Longevity	Long-lasting	Model Number	7079956750 7079977630 707-99-56750 707-99-77630 Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit
Certification	ISO9001	Place of Origin	CHINA
High Light	Excavator hydraulic cylinder seal kit ，Boom arm bucket seal kit ，Hydraulic cylinder repair seal kit

7079956750 7079977630 707-99-56750 707-99-77630 Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit

The hyphenated 707-99-77630 seal kit matches the all-terrain contaminant resistance of 7079977630, ensuring compatibility with legacy excavators that rely on hyphenated part numbering systems. Like 7079977630, the 707-99-77630 kit undergoes rigorous multi-environment testing: 400 hours of debris immersion (mix of rocks, wood chips, and dust), 300 hours of water exposure (simulating rain and mud), and 500 hours of high-temperature operation (mimicking desert conditions)—exceeding the single-environment testing of many competitor kits. A unique feature of 707-99-77630 (not found in non-hyphenated or generic kits) is its quick-release installation pins: each seal comes with a spring-loaded pin that locks into the cylinder groove in just 15 seconds, compared to 8–12 minutes for the screw-on seals of standard kits. This is a major advantage for technicians working in remote locations (e.g., off-road mining sites) where time and tools are limited—one technician reported replacing a bucket cylinder seal with 707-99-77630 in under 3 minutes, versus 25 minutes with a generic kit. The 707-99-77630 kit also includes wear-indicator strips that change from black to red when the seal’s thickness is reduced by 50%, allowing maintenance teams to schedule replacements proactively before leaks cause cylinder damage.

Quality testing for 7079956750 (707-99-56750) and 7079977630 (707-99-77630) focuses on their unique strengths, differing from the friction and temperature tests of lift/tilt-focused kits. The 7079956750 kit undergoes 5,000 cycles of "high-pressure retention testing" (measuring pressure loss during boom arm lifts) and 3,000 hours of "wear resistance testing" (ensuring the AFR-rubber retains its strength under constant articulation). The 7079977630 kit, on the other hand, is subjected to "multi-debris penetration tests" (alternating exposure to different types of terrain debris) and "quick-installation validation" (verifying the speed and reliability of the quick-release pins). These tests comply with ISO 10771-1 (the standard for high-pressure hydraulic seals) and ISO 14971 (risk management for mechanical components), ensuring 707-99-56750 and 707-99-77630 perform consistently in the demanding conditions excavators face. For a fleet of 25 excavators, this means predictable performance: a 7079956750 kit that works reliably on a Volvo EC750E will deliver the same high-pressure durability on a Hitachi ZX890-7, simplifying maintenance planning and cost budgeting.

Another key differentiator of the 7079956750/7079977630 kit is its boom arm and bucket-specific component set—parts that are either missing from lift/tilt kits or generic hydraulic seal kits. The 7079956750 kit includes 12 AFR-rubber seals (8 for boom arm cylinders, 4 for bucket cylinders) with the convex pressure-distribution profile, along with 4 high-strength backup rings to prevent seal extrusion under extreme pressure. The 7079977630 kit adds 10 quadruple-defense contaminant barriers (6 for boom arm, 4 for bucket), 2 cleaning brush and solvent packets, and 3 tubes of high-temperature grease for cylinder rod lubrication. A construction company in Colorado reported that switching to 707-99-77630 reduced bucket cylinder repairs by 55%—not only because of the superior debris protection, but also because the quick-release installation made it easier for technicians to perform regular seal inspections and replacements, instead of delaying maintenance due to time-consuming installation processes. The 7079956750 kit’s high-pressure resilience also extended the life of hydraulic hoses connected to the boom arm by 30%, as the consistent pressure retention reduced strain on the hoses—a benefit not seen with kits that prioritize friction reduction over pressure handling.

In summary, whether referencing the non-hyphenated 7079956750 and 7079977630 or the hyphenated 707-99-56750 and 707-99-77630, our Boom Arm Bucket Hydraulic Cylinder Excavator Seal Kit addresses critical gaps in high-pressure durability, all-terrain contaminant defense, and quick installation—differentiating itself from lift/tilt-focused kits that lack the strength and protection needed for excavator boom arm and bucket operations. These part numbers ensure you get a kit that withstands extreme pressure (7079956750), repels all types of debris (7079977630), and fits both modern and legacy excavators (707-99-56750, 707-99-77630). By choosing these part numbers, you’re investing in more than just leak-free seals—you’re enhancing your excavators’ ability to handle heavy loads, reducing unplanned downtime in harsh environments, and extending the overall lifespan of your boom arm and bucket hydraulic systems.

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Guangzhou JRS Machinery Equipment Co.,Ltd since its inception in 2004, has been engaged in hydraulic seals business of excavators, loaders, bulldozers,breaking hammers and other seals have in-depth study. Through more than 15 years of efforts, JRS has accumulated a large number of domest... Guangzhou JRS Machinery Equipment Co.,Ltd since its inception in 2004, has been engaged in hydraulic seals business of excavators, loaders, bulldozers,breaking hammers and other seals have in-depth study. Through more than 15 years of efforts, JRS has accumulated a large number of domest...

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https://www.hydraulic-sealkits.com/

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