The NATIONAL 5.375x6.624x0.625 Type 45 NBR Oil Seal is designed for rotating equipment requiring dependable sealing performance, lubricant retention, and protection against external contaminants.

The Type 45 Profile is a heavy-duty industrial oil seal configuration featuring a reinforced metal outer case and precision-engineered sealing lip with an integrated garter spring. This design maintains consistent radial pressure against the shaft surface, ensuring reliable sealing performance while minimizing lubricant leakage.

The heavy-duty construction allows the seal to perform effectively under vibration, shock loading, temperature fluctuations, and continuous-duty operation commonly encountered in industrial machinery. The reinforced case improves dimensional stability while maintaining secure housing retention.

Manufactured from premium NBR (Nitrile Butadiene Rubber), the sealing element provides excellent resistance to lubricating oils, hydraulic fluids, gear oils, grease, and petroleum-based lubricants. NBR offers an outstanding balance of oil resistance, abrasion resistance, flexibility, and cost-effective performance for industrial sealing applications.

With dimensions of 5.375 x 6.624 x 0.625 inch, this seal is commonly used in industrial gearboxes, pumps, compressors, mining equipment, agricultural machinery, power transmission systems, and heavy rotating equipment utilizing inch-size shaft systems.

⚙️ Applications

• Industrial gearboxes
• Industrial pumps
• Air compressors
• Mining equipment
• Agricultural machinery
• Conveyor systems
• Power transmission equipment
• Construction machinery
• Heavy rotating equipment
• OEM industrial machinery

🎯 Benefits

✔ Excellent oil retention

✔ Heavy-duty sealing performance

✔ Superior contamination protection

✔ Extend bearing and shaft life

✔ Reduce lubricant leakage

✔ Lower maintenance costs

✔ Reduce equipment downtime

✔ Improve machinery reliability

✔ Suitable for continuous industrial operation

🧠 Technical Insight

• Type 45 Heavy Duty Design
• Spring-loaded sealing lip
• Reinforced metal case construction
• Excellent dimensional stability
• Suitable for oil and grease lubrication
• NBR provides superior oil resistance
• Designed for industrial rotating equipment
• Long-term sealing performance

✅ Key Features

• NATIONAL Industrial Quality
• Type 45 Heavy Duty Design
• Reinforced Metal Case
• Premium NBR Material
• Spring Loaded Sealing Lip
• Excellent Wear Resistance
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: NATIONAL

Model: Type 45

Size: 5.375 x 6.624 x 0.625 inch

Type: Heavy Duty Rotary Shaft Oil Seal

Material: NBR (Nitrile Rubber)

Profile: Type 45

Construction: Reinforced Metal Case

Spring Type: Garter Spring

Shaft Diameter (ID): 5.375 inch

Housing Diameter (OD): 6.624 inch

Width: 0.625 inch

Lubrication: Oil & Grease

Application Class: Heavy Industrial Service

Standard: Inch Size Oil Seal

🔁 Equivalent

Suitable replacement for:

• SKF Industrial Oil Seal
• CR Chicago Rawhide Oil Seal
• CFW Rotary Shaft Seal
• NOK Oil Seal
• KACO Oil Seal
• DICHTOMATIK Oil Seal
• TRELLEBORG Rotary Seal
• Garlock Industrial 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, pump repair, machinery rebuilding, and OEM replacement

📲 Contact via LINE ID: dusitrea

📧 Email: sales@seal4go.com

💬 Technical support available before ordering

🔍 Assistance available for cross-reference and equivalent part identification