Monarch Industries Inc manufactures this seal kit as a direct replacement for maintaining hydraulic power units where original seals have worn or degraded. The Monarch 639573 Seal Kit is engineered to restore proper sealing performance, helping prevent fluid loss and maintain system pressure integrity. Seal kits of this type are essential maintenance components for hydraulic equipment, and using a manufacturer-matched kit ensures dimensional compatibility with the original components.
This kit is suited for technicians and maintenance professionals performing scheduled service or field repairs on Monarch hydraulic units. Sourcing a genuine Monarch seal kit reduces the risk of fitment issues that can result from using non-OEM alternatives.
SKU: RK25L-112
Supplier Part Number (MPN): 639573
Alternate Part Numbers: C1DK13
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Specifications
Alternate Part Numbers
Alternate Part Number639573, Alternate Part Number C1DK13
Brand
Monarch Industries Inc
Brand
Monarch Industries
Pack Size
1.00
UOM
EA
Supplier Part Number
639573
Product Weight
0.08 lbs
Product Questions & Answers (2)
Question by: Carl A on May 6, 2025, 12:40 PM
Will this seal kit fit my Monarch hydraulic unit, or do I need to check some numbers first?
Answer by: Customer Support on May 8, 2025, 7:54 AM
This seal kit is a direct replacement from Monarch Industries, so it should fit perfectly if you're servicing the hydraulic power unit it was originally designed for. It's always a good idea to double-check your unit's model number against the 639573 part number just to be sure.
Question by: Neal W on Oct 24, 2025, 12:24 PM
Is this seal kit made by Monarch themselves, or is it just a third-party kit with their part number on it?
Answer by: Customer Support on Oct 26, 2025, 6:47 AM
Monarch Industries manufactures this kit directly. It carries their part number 639573 and is built to match the original seals used in their hydraulic power units, so you're getting OEM-spec dimensions rather than an aftermarket approximation. That matters when you're trying to avoid fitment headaches down the road.
