Hydraulic cylinder assemblies for Komatsu excavators
Models: PC650LC-11, PC800LC-8, PC950-11R, PC1250-7/8/11R, PC1250LC-11, PC2000-8/11R, PC3000-6/11, PC3400-11M0 and PC4000-6/11.
Canadian-stock seal kits | Application support
Excavator seal kits
matched to your machine.
Excavator hydraulic seal kits and O-ring assortments for Komatsu, Caterpillar, Hitachi, Volvo, SANY, Kobelco, John Deere and CASE. Selected products are stocked in Surrey, BC, with fitment checks by model, serial range and reference number.
Canadian-stock seal kits
Selected kits are stocked in Surrey, BC
Application verified
Model, serial number and reference-number review
Large hydraulic cylinders
Engineered for 60-400 tonne excavators
Additional excavator parts
Sourced to confirmed specifications
Seal-kit inventory
Browse the parts we support most often.
Visual categories for common excavator sealing work. If the exact kit is not listed online, send the model, serial number, cylinder position and reference number for a fitment check.
Excavator cylinder seal kits
Boom, arm and bucket cylinder applications
O-ring assortment kits
Brand-specific hydraulic O-ring assortments
Hydraulic pump seal kits
Pump, swing motor and travel motor sealing support
Floating face seals
Duo-cone mechanical face seal assemblies
Swing motor seal kits
Swing-drive hydraulic motor service
Travel motor seal kits
Final drive and travel motor service
Main control valve seal kits
Main control valve and spool seal support
CAT cylinder seal kits
Boom, arm and bucket cylinder seal-kit support
Fitment finder
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Pick your brand, model and component, or search by part/reference number.
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Hydraulic cylinder seal kits
Boom · arm/stick · bucket applications
Application-specific seal kits →
O-ring assortment kits
Brand-specific hydraulic O-ring assortments
Multiple brand assortments →
Hydraulic pump & motor seal kits
Hydraulic pump · swing motor · travel motor
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Floating face seals
Duo-cone mechanical face seal groups
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Swing motor seal kits
Swing-drive hydraulic motor service
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Travel motor seal kits
Travel motor and final-drive service
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Main control valve seal kits
Main control valve · spool seals
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Additional excavator parts
Hydraulic, undercarriage and wear components
Request a parts quote →
Large hydraulic cylinders
Large excavator hydraulic cylinders for severe-duty service.
Replacement boom, arm, bucket, lift and crowd cylinders for selected 60-400 tonne Komatsu, Caterpillar, Hitachi, SANY, XCMG and Volvo excavators. Specifications, production schedule and availability are confirmed at quotation before production.
Engineering & materialsSerial range, mountings, bore, rod diameter and stroke are verified before drawings and material grades are approved.
Quench-and-temper controlSpecified load-bearing parts are heat-treated for core strength, hardness and impact toughness.
Precision machiningHoned bores, hard-chrome-plated rods and CNC-machined fits. Piston rod threads are heat-treated to specified hardness and toughness requirements to resist stripping and galling.
Welding, assembly & testingQualified welding, clean assembly, dimensional inspection, proof-pressure and internal-leakage testing before release.
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Hydraulic cylinder assemblies for Caterpillar excavators
Models: 365B/C, 374D/F/374, 385B/C, 390D/F, 395, 6015/6015B, 6020/6020B, 6030 and 6040.
Hydraulic cylinder assemblies for Hitachi excavators
Models: ZX670LC/ZX690LCH, ZX870LC/ZX890LCH, EX1200-5/6/7, EX1900-5/6, EX2500-5, EX2600-6/7, EX3500-5 and EX3600-6/7.
Hydraulic cylinder assemblies for SANY excavators
Models: SY650H/SY650HB, SY750H, SY870H, SY980H, SY1050H, SY1250H, SY2000H, SY3000E and SY4000H.
Hydraulic cylinder assemblies for XCMG excavators
Models: XE600GK, XE700GK, XE900D, XE1250G, XE1350, XE2000, XE3000 and XE4000/XE4000E.
Hydraulic cylinder assemblies for Volvo excavators
Models: EC650B, EC700B/EC700C, EC750E and EC950F.
Also available through our China manufacturing and sourcing network: excavator filtration products, seals, pins, bushings, hydraulic pumps, main control valves, undercarriage components and selected engine parts.
Submit a part number ->
Not listed online?
Send the machine and component details.
Send the part number, casting number, machine model, serial number, component location, dimensions and clear photos. We review the fitment details, confirm availability and prepare a quotation after the required information is verified; for photo identification, use our WhatsApp parts desk.
Parts request | Fitment and availability review
Why PowerSoon
Parts support built around correct fitment.
Focused inventory, application checks and broader sourcing support for excavator maintenance and repair teams.
Seal-kit specialists
Excavator cylinder, pump, motor, main control valve, center-joint and track-adjuster seal kits.
Fitment reviewed
Model, serial range, component position and reference number checked before order confirmation.
Canada stock, wider sourcing
Selected kits stocked in Surrey; unlisted hydraulic and excavator parts sourced through our China network.
Seal kit inventory updates
New products, Canadian stock arrivals and restock notices.