Caterpillar 1P-3703 Mechanical Seal
The Caterpillar (CAT) 1P-3703 is a high-performance mechanical seal designed for demanding hydraulic and mechanical applications. Built from durable nitrile rubber (NBR), this seal provides long-lasting protection against fluid leakage and contamination, ensuring optimal performance in industrial and heavy-duty equipment.
- Manufacturer: Caterpillar (CAT)
- Type: Seal (Mechanical Seal / Ring Seal)
- Part No.: 1P-3703
Technical Information
- Function: Acts as a sealing element in hydraulic or mechanical assemblies; prevents fluid leakage and ingress of dust or contaminants; maintains pressure integrity in hydraulic circuits or rotating shafts
- Material: Nitrile Rubber (NBR)
- Typical Use: Cylinder sealing, transmission housing seal, lift mast hydraulic systems
- Operating Conditions: Compatible with hydraulic oil, grease, or transmission fluid
- Pressure Range: 10 to 20 bar
- Temperature: -20 °C to +120 °C
- Outer Diameter: 39 mm
- Inner Diameter: 31 mm
- Thickness: 4 mm








