Cat 320c 320cl 320L 320bl Excavator Arm Hydraulic Cylinder Seal Kit

• Customization: Available
• After-sales Service: Yes
• Warranty: 1 Year
• Model NO.: Seal Kit
• Type: Seal Kits
• Application: Excavator
• Certification: CE, ISO9001: 2000
• Condition: New
• Part No.: 2478996
• Applicable Model: Cat 320cl
• Part Name: Boom Hydraulic Cylinder Seal Kit
• Delivery: by Air, by Sea, by Courier
• Material: NBR/ PTFE/ Acm/ Vmq/ FKM/ HNBR/ EPDM/ Silicone etc
• Transport Package: Package
• Specification: Boom Hydraulic Cylinder Seal Kit
• Trademark: CAT
• Origin: China
• Production Capacity: 50000 Sets/Year

Product Description

Caterpillar oil seals are high-performance radial shaft seals specifically engineered for excavator applications. These precision components utilize advanced elastomeric materials (typically fluorocarbon rubber or nitrile compounds) combined with reinforced metal casings to ensure superior sealing integrity in demanding hydraulic and lubrication systems. Designed to withstand extreme pressures (up to 50 bar) and temperature ranges (-40°C to +150°C), they prevent fluid leakage while protecting critical components from abrasive contaminants. The multi-lip design features a primary sealing edge with patented spring tensioners for consistent contact pressure, complemented by secondary exclusionary lips for particulate defense. Compatible with Cat hydraulic fluids and meeting ISO 6194/SAE J946 standards, these OEM-certified seals ensure optimal performance for boom cylinders, swing motors, and undercarriage final drives. Their anti-wear coatings and UV-resistant formulations guarantee extended service life even under cyclic stress and environmental exposure.

Part No.	Part Name	Applicable Model
2478996	Boom Hydraulic Cylinder Seal Kit	CAT 320C, 320CL
2502487	Boom Hydraulic Cylinder Seal Kit	CAT 320BL
1764934	Boom Hydraulic Cylinder Seal Kit	CAT 320L
2043616	Arm Hydraulic Cylinder Seal Kit	CAT 320C, 320CL, 320L
1373764	Arm Hydraulic Cylinder Seal Kit	CAT 320BL
2478996	Bucket Hydraulic Cylinder Seal Kit	CAT 320BL, 320C, 320CL, 320L
1225077	Track Adjuster Cylinder Seal Kit	CAT 320C, 320CL
901408-A	Track Adjuster Cylinder Seal Kit	CAT 320BL, 320L