The Freudenberg NI 300 U-ring rod seal is a high-quality sealing component designed for hydraulic systems, where reliability under pressure and temperature variation is critical. Built from advanced materials, it’s suited for demanding industrial applications.
Key Specifications
- Manufacturer: Freudenberg Sealing
- Model: NI 300
- Type: U-ring rod seal
- Inner Diameter: 80 mm
- Outer Diameter: 90 mm
- Width: 12 mm
- Installation Length: 13 mm
- Material: 94AU925 polyurethane
- Hardness: 94 Shore
- Temperature Range: -30°C to +110°C
- Price: €29.70 (incl. VAT)
Build & Material
Made from high-performance polyurethane, this seal offers:
- Excellent wear resistance
- Strong elasticity and sealing capability
- Resistance to hydraulic fluids and pressure
The 94 Shore hardness ensures durability while maintaining flexibility for tight sealing.
Performance
- Designed for hydraulic rod sealing
- Prevents leakage under high-pressure conditions
- Performs reliably across wide temperature ranges
- Maintains sealing integrity during continuous operation
Applications
- Hydraulic cylinders
- Industrial machinery
- Construction equipment
- Agricultural systems
Value for Money
Freudenberg is a premium brand, and while the price is higher than generic seals, it reflects long lifespan and consistent performance, reducing maintenance costs over time.
Pros
- High-quality polyurethane material
- Excellent sealing performance
- Wide temperature tolerance
- Trusted industrial brand
Cons
- Higher price compared to standard seals
- Requires precise sizing and correct installation
Final Verdict
The Freudenberg NI 300 U-ring seal is a reliable, professional-grade sealing solution for hydraulic systems. Ideal for users who prioritize durability and performance in demanding environments.
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