RG138-67780 Blade Cylinder Seal Kit for Kubota KX36-3 / KX41-3 Mini Excavators
Product Overview
The RG138-67780 blade cylinder seal kit is a factory-manufactured aftermarket replacement kit cross-referenced against the Kubota part number RG138-67780 (also written RG13867780). It is intended for the dozer blade (blade) cylinder of Kubota KX36-3 and KX41-3 mini excavators and is designed to restore leak-free sealing performance during a hydraulic cylinder overhaul.
DJF Seals produces this kit in-house and supplies it at factory-direct wholesale pricing with a low minimum order quantity, making it a practical stock item for heavy equipment parts suppliers, repair shops and fleet maintenance programs that service Kubota mini excavators.
Verified Application
The following application data was cross-checked against public aftermarket listings and industrial seal catalogs:
| Part Number | RG138-67780 (RG13867780) |
| OEM Reference | Kubota RG138-67780; aftermarket cross KUB-RG138-67780 / KBRG138-67780 |
| Cylinder Position | Blade (dozer blade) cylinder |
| Verified Fitments | Kubota KX36-3 and KX41-3 mini excavators |
| Rod / Bore (per seal catalog) | 30 mm / 60 mm |
| Condition | New, aftermarket replacement |
Note: specific material grades, pressure rating, temperature range, exact piece counts, certifications and service life are factory data and are not independently verified. Confirm these details with the factory before ordering.
Replacement Scope
This kit covers the sealing elements required for a blade cylinder rebuild, including the rod seal, piston seal, wiper (dust seal), O-rings and supporting backup or guide elements for the RG138-67780 cylinder configuration. Exact kit contents and piece counts should be confirmed with the factory against your cylinder before ordering.
Fitment Verification
The part number, cylinder position and fitments were verified through multiple independent sources:
- eBay listings: “RG138-67780 Boom Blade Dozer Cylinder Seal Kit Fits Kubota KX36-3 KX41-3” and “Kubota KX36-3 Dozer Blade Ram Seal Kit (ref KUB RG138-67780)”.
- Hercules industrial seal catalog: KUB-RG138-67780, SK-30.00×60.00 (Kubota excavators – compact).
- Aztec Hydraulics and Industrial Hydraulic Parts: Kubota RG138-67780 Kit Seal Kit (KUB-RG138-67780 / KBRG138-67780).
- KX36-3 / KX41-3 fitment and the blade (dozer) cylinder position are confirmed by the majority of aftermarket listings.
- 30 mm rod x 60 mm bore is confirmed by the Hercules catalog cross-reference.
- Conflict note: the Hercules catalog lists the application as “BOOM” in its Kubota section, while most aftermarket listings and this page identify the blade (dozer) cylinder. Confirm the cylinder position against your machine’s parts book before ordering.
- Messicks (Kubota OEM dealer) returns the OEM number as invalid/discontinued; the aftermarket kit is supplied as a replacement cross-reference.
- Materials, pressure, temperature, piece counts, certifications and service life are not independently verified.
Factory Inspection & Packing
Each RG138-67780 kit is assembled and checked at the DJF factory before packing. Sealing elements are placed in labeled poly bags marked with the part number, then packed into export cartons for protection during international shipping. Kits can be packed under DJF branding, neutral packaging, or your own private label for distribution.
Wholesale Ordering
DJF Seals supplies the RG138-67780 kit at factory-direct wholesale pricing for distributors, dealers and repair shops. To request a quotation, send your part number and quantity to [email protected] or [email protected]. OEM/ODM service, custom packaging and bulk container shipping are available for regular programs.
MOQ
MOQ: 5 kits.
FAQ
Q: Which machines does the RG138-67780 seal kit fit?
A: Verified fitments are the Kubota KX36-3 and KX41-3 mini excavators, for the dozer blade (blade) cylinder. Confirm with your machine serial number and parts book before ordering.
Q: Is this kit for the blade cylinder or the boom cylinder?
A: Most aftermarket listings, including this page, identify it for the blade (dozer) cylinder. One industrial catalog lists the application as boom, so verify the cylinder position on your machine before purchase.
Q: Can you supply other Kubota seal kits or custom kits?
A: Yes. DJF Seals manufactures thousands of hydraulic cylinder seal kits and supports customization. Send your part number or dimensions to [email protected].
Q: What is the minimum order quantity?
A: MOQ: 5 kits.
