5J-8300-3K Hydraulic Cylinder Seal Kit for Caterpillar CAT D6D D8K D9N 950F

5J-8300-3K Hydraulic Cylinder Seal Kit – Premium Aftermarket Replacement for Caterpillar

Restore peak hydraulic performance and eliminate fluid leaks with this professional-grade 5J-8300-3K hydraulic cylinder seal kit. Specifically engineered for a wide range of Caterpillar (CAT) heavy machinery, including D6, D8, and D9 series dozers and 950 series wheel loaders, this kit provides a high-performance sealing solution for critical cylinder operations. Each component is manufactured by WINSCHEN using premium-grade elastomeric materials to ensure a leak-free seal and extended service life in high-pressure construction and earthmoving environments.

Key Features and Selling Points

• Stops Hydraulic Leaks: Precision-engineered seals effectively contain hydraulic fluid, preventing cylinder drift and ensuring smooth, responsive control of blades and buckets.
• Direct OEM Fit: Matches Caterpillar specifications for a quick, hassle-free overhaul, significantly reducing machine downtime and labor costs.
• Industrial-Grade Durability: Built to withstand extreme hydraulic surges and abrasive job site contaminants like dirt, grit, and mud.
• Complete Repair Solution: Includes all essential rod seals, piston seals, and O-rings required for a comprehensive hydraulic cylinder rebuild.
• Cost-Effective Reliability: Delivers original equipment quality at a competitive aftermarket price, maximizing your fleet’s operational efficiency.

Compatible Equipment Models

Based on the provided catalog and industry data, the 5J-8300-3K seal kit fits cylinders on the following Caterpillar (CAT) models:

• Track-Type Tractors (Dozers): D5B, D5H XL, D6D, D6G, D6H, D6M, D6N, D6R, D7G, D7H, D7R II, D8K, D8L, D8N, D8R, D9H, D9N, D9R
• Wheel Loaders: 950, 950B, 950E, 950F, 950G, 960F, 962G, 980, 980B, 980C, 980F, 980G
• Excavators: 215C, 215D, 225, 235, 235C, 345B L
• Backhoe Loaders: 446
• Articulated Trucks: D250E
• Wheel Tractors/Scrapers: 623E, 631D, 631E, 633E, 637E, 641B

Specifications

Unsure about fitment for your Caterpillar machine? Contact our technical support team with your machine’s serial number or cylinder part number for expert confirmation. We offer fast global shipping to keep your equipment back on the job.