K1038790 Center Joint Seal Kit supports DX300LCA swivel joint resealing for B2B excavator parts repair, overhaul, stocking, and wholesale sourcing.
The K1038790 Center Joint Seal Kit YNF19105, also referenced as 400826-00011A, is supplied for servicing compatible DX300LCA excavator center joint assemblies. The center joint, also called a swivel joint or rotary joint, allows hydraulic oil to be transferred between the upperstructure and undercarriage while relative rotation occurs.
During long-term excavator operation, internal sealing elements can be exposed to hydraulic pressure, oil temperature, contamination, and continuous rotational movement. Worn, hardened, cut, or damaged seals may contribute to external oil leakage or internal hydraulic bypass within the center joint.
For professional B2B buyers, the K1038790 Center Joint Seal Kit should be matched using both reference numbers, DX300LCA machine information, center joint identification, existing seal arrangement, and product photos. Seal-kit contents can vary between rotary joint configurations, so careful matching before bulk purchasing helps reduce incomplete repairs, incorrect inventory, workshop delays, and unnecessary international freight.
| Parameter | Specification |
|---|---|
| YNF Part Number | YNF19105 |
| Primary Part Number | K1038790 |
| Alternative Part Number | 400826-00011A |
| Product Name | Center Joint Seal Kit |
| Alternative Name | Swivel Joint Seal Kit / Rotary Joint Seal Kit / Center Joint Repair Kit |
| Product Type | Hydraulic Rotary Joint Resealing Kit |
| Parts Category | Excavator Hydraulic Repair Parts |
| Machine Reference | DX300LCA |
| Main Function | Replaces Sealing Components During Center Joint Repair |
| Application | Excavator Hydraulic Center Joint / Swivel Joint |
| Working Medium | Hydraulic Oil |
| Service Type | Center Joint Resealing / Rotary Joint Overhaul |
| Fitment Check | K1038790 / 400826-00011A / DX300LCA / Center Joint Reference / Existing Seal Layout / Product Photos |
| Quality Type | Aftermarket Replacement |
| Condition | New |
| Brand | YNF |
| Origin | China |
| MOQ | 1 Set |
| Shipping Method | Air, Sea, Express |
| Payment Terms | T/T, PayPal, Western Union |
| Application | Description |
|---|---|
| DX300LCA Excavator | Used in compatible hydraulic center joint assemblies |
| Center Joint Resealing | Replaces aged or damaged internal sealing components |
| Hydraulic Leak Repair | Suitable when leakage is traced to the center joint |
| Rotary Joint Overhaul | Used during complete swivel joint disassembly and rebuilding |
| Hydraulic Bypass Repair | Seal condition can be addressed during internal leakage diagnosis |
| Undercarriage Hydraulic Service | Supports repair of oil-transfer paths between machine sections |
| Hydraulic Workshop | Practical for professional center joint rebuilding |
| B2B Parts Stocking | Suitable for dealers, wholesalers, and hydraulic parts distributors |
Q: What is YNF19105?
A: It is a center joint seal kit referenced by K1038790 and 400826-00011A for compatible DX300LCA applications.
Q: What is a center joint also called?
A: It is commonly called a swivel joint or hydraulic rotary joint.
Q: What is this kit used for?
A: Sealing components are replaced during center joint resealing and overhaul.
YNF Machinery supplies K1038790 / 400826-00011A center joint seal kits for DX300LCA excavator workshops, hydraulic repair companies, machinery dealers, wholesalers, fleet operators, and international importers.
The YNF19105 swivel joint seal kit is intended for professional hydraulic repair where the existing center joint can be disassembled and resealed rather than replaced as a complete assembly. For B2B purchasing, the reference numbers should be checked together with the machine model, center joint configuration, removed seals, and existing assembly photos.
Buyers can provide the K1038790 or 400826-00011A reference, DX300LCA machine information, required quantity, center joint photos, removed-seal layout, and any available joint identification for fitment checking.
Complete center joints, travel motor seal kits, swing motor seal kits, hydraulic pump seal kits, control valve seal kits, O-ring kits, hydraulic hoses, and related repair parts can also be consolidated into the same order for more efficient procurement.
