Application: Bucket cylinder seal kit — replaces worn or damaged seals in the bucket cylinder to restore full curl force and eliminate external hydraulic leaks
Rod Diameter: 95mm (3-3/4")
Bore Diameter: 145mm (5-11/16")
Manufacturer: Bulldog / Hercules Hydraulics — Made in USA
Condition: Aftermarket replacement part
Common Use Case or Symptoms: Use when the bucket cylinder is leaking externally, the bucket loses curl force under load, or the bucket drifts open when held in a curled position — all common signs of worn bucket cylinder seals on the Hyundai R280LC and R320LC-1 excavators.
Why Choose Broken Tractor:
✅ Made in the USA by Bulldog / Hercules Hydraulics: Precision-engineered seal kit manufactured to exact OEM rod and bore specifications for a leak-free, direct-fit installation
✅ Restore Full Bucket Performance: Worn bucket cylinder seals reduce curl force and digging efficiency — a fresh seal kit restores full hydraulic performance on your R280LC or R320LC-1
✅ Fast Shipping from a U.S.-Based Team: In-stock and ready to ship same day from our U.S. warehouses
$174.00
Shipping charges are calculated at checkout.
Items are NOT guaranteed to be in stock at the time of order.
Refunds are offered if the item is on back-order.
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Do you need your part quickly? You're in luck! We have warehouses all over the country to ensure a quick and easy delivery time. Most of our parts ship from our warehouses the same day you place your order. And many times, orders are delivered in Two to Three days.
Our in house parts are manufactured following strict quality standards in our warehouse in Ohio. Parts such as hydraulic cylinders, pins, bushings, sheet metal, track adjusters, booms and dipper sticks are all ready to ship same day that they are purchased! With less time to wait for your shipment, you will be able to get back to work as quickly as possible.
Did you accidentally purchase the incorrect part? We offer returns and exchanges here at Broken Tractor. To proceed with a return, please call us toll free, and we will provide you with return authorization and a step by step return process for your convenience. We are more than happy to help you exchange your part for the correct one! Give us a call at 1-800-909-7060 and we would be pleased to help you.