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Oil Sealing
We specialize in aftermarket seal kits compatible with brands such as Caterpillar, Komatsu, JCB, and John Deere. We offer B2B bulk order consultation and large-scale procurement services. With years of industry experience, we provide wholesale and long-term bulk supply services to our global business partners. Submit your bulk order details, and our professional B2B team will provide you with competitive pricing, fast delivery times, and customized supply solutions within 24 hours.
This transmission seal-ring listing consolidates Caterpillar reference options for CX38 drivetrain service: 6Y-2983, 478-0048, 518-3168, 1S-6515, 488-6382, 9G-8718, 7T-5987, 150-3296, 9U-9484, 6T-0838, and 1P-9216. These rings can look similar but are not interchangeable: diameters, cross-sections, lip directions, and transmission locations differ. Select the exact part number required before ordering. Suitable for distributors sourcing transmission service parts for articulated trucks and CX38 applications. Ruijueparts supports part-number checks and neutral or customer-specified packaging.
Part Number: 6Y-2983, 478-0048, 518-3168, 1S-6515, 488-6382, 9G-8718, 7T-5987, 150-3296, 9U-9484, 6T-0838, and 1P-9216.
Brand: Caterpillar replacement
Type: Transmission Seal Rings
Fits listed models: Articulated Trucks: 735C, 740, 740C, 740 GC, 745, 745C; Transmission: CX38-P892; Petroleum Transmission: CX38-P800, CX38-P892; Ejector Truck: 740; Industrial Engine: G3512
Application: Transmission / Planetary Clutch System | Individual seal-ring options for compatible Caterpillar drivetrain and CX38 transmission applications. These rings help seal clutch and rotating transmission components as the machine transfers drive power. Select the required reference number; do not substitute by appearance.
Condition: New aftermarket
Q1: Are 6Y-2983, 478-0048, 518-3168 and the other listed references interchangeable?
A: No. They are separate transmission seal-ring references. Although some rings may look alike and share machine families, their dimensions, lip direction, cross-section, and installed transmission position differ.
Q2: Why are multiple part numbers supplied on one product page?
A: This page is designed as a multi-variant listing for buyers sourcing related CX38 transmission seal rings. Select the precise reference number required rather than treating the list as a replacement chain.
Q3: Does every listed seal ring fit every 735C, 740, or 745 articulated truck?
A: No. Equipment compatibility varies by the selected reference, transmission configuration, and machine serial number. Check the original part number before ordering.
Q4: Is this a complete CX38 transmission overhaul kit?
A: No. The listed products are individual transmission seal-ring options. If you need a complete overhaul set, send the transmission reference or purchasing list for item-by-item checking.
Our aftermarket seal kits deliver a practical, cost-effective solution without compromising on real-world performance. We offer a lower upfront cost and reliable sealing for your daily maintenance and repair needs.
We stock seal kits across CAT, Komatsu, Volvo, JCB, Hitachi, Doosan, John Deere, Kubota, and 10+ other brands—one supplier for your whole fleet.
Ship under RuijueParts branding, neutral (unbranded) packaging, or your own private label. Suitable for resellers and distributors.
When genuine OEM seals are out of production for your old machinery, we can custom-make oil seals using your dimensions or our engineer-recommended specifications.
Ship under RuijueParts branding, neutral (unbranded) packaging, or your own private label. Suitable for resellers and distributors.
Volume pricing for repair shops, dealers, and fleet operators. Get a quote via our website or WhatsApp: +86 13692100161.
OEM seal kits are the right choice when machinery is under active warranty, operating at peak duty cycles, or when failure risk is unacceptably high. Budget aftermarket—like Ruijue Parts—makes sense in these common scenarios:
When a machine is aging out of your fleet, OEM parts cost more than the job warrants. A budget kit extends service life without over-investing.
For machines used infrequently or on lower-intensity tasks, premium OEM pricing may not be justified.
When OEM stock is out or delivery takes weeks, an available aftermarket kit gets your machine running now.
Repair shops and fleet managers running high volumes of machines often balance OEM and aftermarket across their portfolio based on criticality.
Fully retract the cylinder and relieve system pressure before disassembly. Never work on a pressurized circuit.
Remove from the machine. Unthread the gland nut and withdraw the piston rod carefully to avoid surface damage.
Clean the bore, rod, and all metal parts with a lint-free cloth. Contamination introduced during reassembly accelerates seal wear—this step is especially important for budget-grade seals.
Check for scoring or pitting. Budget seals are more sensitive to surface imperfections—address rod damage before fitting new seals.
Lightly coat each seal with clean hydraulic fluid before installation. Use proper seal drivers — not screwdrivers or sharp tools — to avoid nicking the sealing lip.
Torque the gland nut to spec and cycle the hydraulic system under no-load conditions. Inspect for leaks before returning the machine to service.
Budget-grade seals may have shorter service intervals than OEM. Inspect rod seals for moisture, oil film, or weeping more frequently and replace proactively.
Contaminated fluid degrades seals faster — this applies especially to non-OEM materials. Replace fluid and filters on schedule.
When storing equipment with cylinders extended, protect rod surfaces from corrosion and debris to preserve wiper seal life.
Avoid using sharp tools during assembly to prevent nicks or scores on the seal lips. Pre-lubricating all components with clean hydraulic oil is recommended to ensure a smooth fit into the cylinder grooves.
Click "Add to Cart" for immediate dispatch, or contact our team for bulk pricing and wholesale support.
First order was a pleasant surprise-
great value for money.
Good! The 101529-00005 seal kit
performed exceptionally. No oil leaks,smooth operation.
Fast delivery and exactly as described.Highly recommend!
Seals fit well and arrived on time.
Good quality for the price.
