GC9752100198 Hydraulic Seal Kit for Grove Crane (7" Rod x 11" Bore Cylinder)
SKU: GC9752100198
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Product Description
The GC9752100198 Seal Kit is an aftermarket hydraulic seal set for Grove crane cylinders with a 7-inch rod diameter and 11-inch bore. It suits large rough-terrain and truck crane applications, including boom lift and outrigger jack cylinders on Grove RT models such as the RT515, RT518, RT525, RT527, and similar models. The kit includes all seals and rings required to rebuild one cylinder: rod seals, piston seals, wear rings, O-rings, backup rings, and wipers. Each component is precision-sized for the 7" rod and 11" bore configuration. Seals are made from high-performance materials, including polyurethane, PTFE (also known as Teflon), and nitrile rubber. These materials can withstand hydraulic pressures of up to 3,000 psi or more, ensuring durability and leak resistance.
Cross References
Different suppliers with variations of the part number may reference this seal kit:
Product Specifications
The specifications of this product are mentioned below:
Features of this Product
All seals precisely fit a 7" rod × 11" bore cylinder, ensuring correct sealing clearances.
The kit includes rod seals, piston seals, head wiper, O-rings, wear bands, and backup rings for a full reseal.
Made from heavy-duty polyurethane, rubber, and PTFE, these wear rings resist extrusion and withstand high hydraulic pressures.
Restores cylinder by stopping leaks and bypass, holding pressure without drift, and ensuring smooth, safe operation.
Manufactured to OEM specifications for reliable performance and long service life.
Provides a cost-effective alternative to OEM kits, supporting affordable crane maintenance.
Matches industry code “I-U-11 7 × 11” for compatibility across catalogs and suppliers.
Prevents hazardous leaks and ensures booms and outriggers remain safely in position.
Warranty Information
A 1-year limited warranty backs this Grove crane seal kit against defects in material or manufacturing.
Our Return & Refund Policy
We accept returns on unopened and unused seal kits within 30 days of the purchase date. Non-defective returns (e.g., wrong kit or no longer needed) must be in original condition and are subject to a 20% restocking fee. To initiate a return, please visit our Refund & Return Policy page or contact our customer service.
Not Sure If This Seal Kit Fits Your Equipment?
Contact us with your crane’s model (and if possible, the cylinder part number). Our experienced staff will help identify the correct seal kit.
Reach us at 832-239-5393 or 1-800-210-8170, or email info@palletjackson.com. We are available Monday through Friday, 9:00 a.m. to 6:00 p.m. EST.
Frequently Asked Questions
Q: Which crane models does this 7" x 11" seal kit cover?
A: It fits Grove RT cranes like RT515, RT518, RT525, RT527, and some TM truck cranes using 7" rod/11" bore cylinders. These are often boom lift or outrigger cylinders. Confirm by checking your parts manual—if it lists kit 9752100198 or “Repair Kit, 7 x 11,” this is the correct kit.
Q: My crane’s boom is slowly creeping down – will replacing seals with this kit fix that?
A: Yes. Boom creep typically indicates that piston seals are leaking, allowing oil to bypass inside the cylinder. However, the problem could also be caused by issues with the cylinder barrel, internal leaks in the main control valve, a faulty holding valve, or even low or contaminated hydraulic fluid. To pinpoint the exact cause, first check for external leaks. Then, test the individual cylinders by capping them and observing if the boom still drifts to isolate a faulty cylinder.
Q: Is this an OEM kit or aftermarket? Does it matter for performance?
A: It’s an aftermarket kit built to OEM specifications using equivalent materials like urethane, PTFE, and nitrile. Performance and durability match those of the OEM, with cost savings and improved availability. Many cranes use aftermarket kits confidently for cylinder rebuilds.
Q: Will this kit work on a Grove crane outrigger jack?
A: Yes, if the outrigger cylinder uses a 7" rod and 11" bore. Many outriggers are smaller, so check your parts book for kit 9752100198 or “7 x 11.” Lock valves don’t affect seal selection—it’s purely rod and bore size. Always confirm cylinder dimensions before ordering.
Q: Can I reuse any old seals, or should everything be replaced?
A: Replace all seals. Even if one has failed, the others are aged and may soon follow. This kit provides a complete set, so reusing old seals risks repeated teardown. Installing all new components ensures reliability, prevents leaks, and avoids downtime from partial rebuilds.
Q: After resealing, what hydraulic oil should I refill the cylinder with?
A: Common grades like ISO VG 46 or ISO VG 68 are used for cranes.
Frequently Bought Together
Here are some items frequently bought together with this 7" x 11" seal kit:
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