The CR 2.500x6.125x0.531 Model 45 NBR Oil Seal is engineered for heavy-duty rotating machinery operating under severe industrial conditions where durability and reliable sealing performance are essential. It is widely used in industrial gearboxes, mining equipment, paper mills, steel processing equipment, pumps, conveyors, crushers, and OEM machinery.

The Model 45 Profile is a classic heavy-duty metal case rotary shaft oil seal developed by Chicago Rawhide (CR). It incorporates a reinforced steel outer case together with a precision spring-loaded primary sealing lip, providing excellent dimensional stability, secure housing retention, and consistent sealing performance throughout extended operating periods.

The integrated garter spring continuously maintains radial sealing pressure against the rotating shaft, minimizing lubricant leakage while protecting bearings, shafts, and internal components from premature wear. The heavy-duty steel case maintains seal integrity under vibration, shock loading, and continuous industrial operation.

Manufactured from premium NBR (Nitrile Butadiene Rubber), this oil seal provides excellent resistance to:

• Mineral oils
• Hydraulic oils
• Gear oils
• Lubricating grease
• Petroleum-based lubricants

NBR offers excellent abrasion resistance, flexibility, and long service life for general industrial applications. Typical operating capability is up to 0.5 Bar, with operating temperatures ranging from -40°C to +100°C, depending on shaft speed, lubricant compatibility, and operating conditions.

With dimensions of 2.500 × 6.125 × 0.531 inch, this oil seal is commonly installed in heavy-duty industrial gearboxes, pumps, mining equipment, steel mills, paper mills, conveyors, crushers, power transmission systems, and OEM machinery utilizing inch-size shaft systems.

⚙️ Applications

• Heavy-duty industrial gearboxes
• Industrial pumps
• Mining equipment
• Steel mills
• Paper mills
• Conveyor systems
• Crushers
• Power transmission equipment
• Heavy industrial machinery
• OEM machinery

🎯 Benefits

✔ Heavy-duty industrial construction

✔ Excellent oil retention

✔ Outstanding wear resistance

✔ Protects bearings and shafts

✔ Reliable sealing under severe operating conditions

✔ Excellent dimensional stability

✔ Long service life

✔ OEM quality replacement

✔ Reduces maintenance costs

🧠 Technical Insight

• CR Model 45 Heavy Duty Design
• Reinforced Steel Case
• Spring Loaded Main Lip
• Premium NBR Material
• Excellent Oil Resistance
• Oil & Grease Compatible
• Designed for Severe Industrial Service
• Proven Chicago Rawhide Technology

✅ Key Features

• Chicago Rawhide (CR) Quality
• Model 45 Heavy Duty Profile
• Reinforced Steel Case
• Premium NBR Material
• Spring Loaded Main Lip
• Excellent Wear Resistance
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: CR (Chicago Rawhide)

Model: 45

Size: 2.500 × 6.125 × 0.531 inch

Type: Heavy Duty Rotary Shaft Oil Seal

Material: NBR (Nitrile Butadiene Rubber)

Profile: Model 45

Construction: Reinforced Metal Case

Lip Design: Spring Loaded Main Lip

Dust Lip: None

Spring Type: Garter Spring

Shaft Diameter (ID): 2.500 inch

Housing Diameter (OD): 6.125 inch

Width: 0.531 inch

Pressure Capability: Up to 0.5 Bar

Lubrication: Oil & Grease

Temperature Range: -40°C to +100°C

Application Class: Heavy Industrial Service

Standard: Inch Size Oil Seal

🔁 Equivalent

Suitable replacement for:

• SKF Heavy Duty Oil Seal
• National Oil Seal
• Freudenberg Oil Seal
• NOK Heavy Duty Oil Seal
• CFW Rotary Shaft Seal
• KACO Oil Seal
• DICHTOMATIK Oil Seal
• Garlock Oil Seal
• Simrit Oil Seal
• OEM Heavy Duty Oil Seal

(Always verify dimensions and seal profile before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for industrial maintenance, gearbox overhaul, mining equipment service, pump repair, steel mill maintenance, and OEM replacement applications.

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification