The TROSTEL 4.375x6.071x0.625 M/L Leather Oil Seal is specifically designed for heavy-duty industrial equipment operating under demanding conditions where long service life and reliable sealing performance are essential. It is commonly used in industrial gearboxes, mining machinery, steel mills, paper mills, agricultural equipment, heavy-duty pumps, and restoration projects requiring traditional leather sealing technology.

The M/L Profile combines a reinforced steel outer case with a genuine leather sealing lip. This proven heavy-duty construction has been trusted for decades because genuine leather provides excellent flexibility, durability, and sealing performance under difficult operating conditions.

Unlike synthetic rubber seals, genuine leather naturally absorbs lubricating oil and creates a microscopic lubrication film between the sealing lip and rotating shaft. This self-lubricating characteristic minimizes friction, reduces shaft wear, and significantly extends the service life of both the oil seal and rotating components.

Leather sealing lips also conform naturally to shaft surfaces, making them particularly suitable for shafts with minor wear or slight surface imperfections. They perform exceptionally well in dusty, muddy, abrasive, and poorly lubricated environments where leather technology has traditionally demonstrated superior reliability.

The reinforced steel case provides excellent dimensional stability and secure housing retention while the leather sealing lip effectively retains lubricants and protects bearings, shafts, and internal components from contamination.

With dimensions of 4.375 × 6.071 × 0.625 inch, this oil seal is widely used in industrial gearboxes, heavy-duty pumps, mining equipment, steel processing machinery, agricultural equipment, construction machinery, conveyor systems, and OEM rotating equipment utilizing inch-size shaft systems.

⚙️ Applications

• Industrial gearboxes
• Heavy-duty pumps
• Mining equipment
• Steel mills
• Paper mills
• Agricultural machinery
• Construction machinery
• Conveyor systems
• Heavy industrial machinery
• OEM machinery

🎯 Benefits

✔ Genuine leather sealing technology

✔ Excellent lubricant retention

✔ Outstanding wear resistance

✔ Suitable for worn shaft surfaces

✔ Excellent performance in dusty environments

✔ Long service life

✔ Ideal for machinery restoration

✔ Reliable oil and grease sealing

✔ Maintains original equipment specifications

🧠 Technical Insight

• M/L Metal Case + Leather Lip Design
• Genuine Leather Sealing Element
• Reinforced Steel Case Construction
• Self-Lubricating Leather Technology
• Suitable for Oil & Grease Lubrication
• Excellent Shaft Conformability
• Designed for Heavy Industrial Applications
• Traditional Heavy-Duty Sealing Solution

✅ Key Features

• TROSTEL Industrial Quality
• M/L Leather Profile
• Genuine Leather Sealing Lip
• Reinforced Steel Case
• Excellent Wear Resistance
• Suitable for Restoration Projects
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: TROSTEL

Model: M/L

Size: 4.375 × 6.071 × 0.625 inch

Type: Leather Rotary Shaft Oil Seal

Material: Genuine Leather

Case Material: Steel

Profile: M/L

Construction: Metal Case + Leather Lip

Shaft Diameter (ID): 4.375 inch

Housing Diameter (OD): 6.071 inch

Width: 0.625 inch

Lubrication: Oil & Grease

Application Class: Heavy Industrial Service

Standard: Inch Size Oil Seal

🔁 Equivalent

Suitable replacement for:

• SKF Leather Oil Seal
• CR Chicago Rawhide Leather Seal
• National Leather Oil Seal
• Garlock Leather Oil Seal
• SCHNIEDER Leather Oil Seal
• REPCO Leather Oil Seal
• Federal-Mogul Leather Oil Seal
• Simrit Leather Oil Seal
• KACO Leather Oil Seal
• OEM Leather Rotary Shaft 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, machinery restoration, gearbox overhaul, heavy-duty pump repair, mining equipment service, agricultural machinery 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