The SCHNIEDER 3.375x4.380x0.625 M/L/L Leather Oil Seal is engineered for heavy-duty rotating equipment operating in severe industrial environments where maximum sealing efficiency and durability are essential. It is particularly suitable for industrial machinery originally equipped with leather oil seals, restoration projects, mining machinery, agricultural equipment, and OEM rotating equipment.

The M/L/L Profile features a reinforced steel outer case combined with triple genuine leather sealing lips. This traditional heavy-duty design provides significantly better lubricant retention and contaminant exclusion than conventional single-lip leather seals. The multiple sealing lips create additional sealing barriers, making the seal highly effective in dusty, muddy, wet, and abrasive operating environments.

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

The leather sealing lips also conform exceptionally well to shaft surfaces, making them suitable for shafts with slight wear or minor surface imperfections. This feature makes leather oil seals highly desirable for machinery restoration and older industrial equipment that originally utilized leather sealing technology.

Manufactured using premium Genuine Leather with a reinforced steel case, this seal provides outstanding durability, dimensional stability, and dependable sealing performance throughout extended operating periods.

With dimensions of 3.375 × 4.380 × 0.625 inch, this oil seal is commonly installed in industrial pumps, heavy-duty gearboxes, mining machinery, agricultural equipment, compressors, conveyor systems, construction machinery, and OEM rotating equipment utilizing inch-size shaft systems.

⚙️ Applications

• Industrial gearboxes
• Industrial pumps
• Agricultural machinery
• Mining equipment
• Air compressors
• Conveyor systems
• Power transmission equipment
• Heavy industrial machinery
• Machinery restoration projects
• OEM machinery

🎯 Benefits

✔ Triple leather lip sealing technology

✔ Excellent lubricant retention

✔ Superior contamination protection

✔ Outstanding wear resistance

✔ Suitable for worn shaft surfaces

✔ Performs exceptionally well in dusty environments

✔ Long service life

✔ Ideal for machinery restoration

✔ Maintains original equipment specifications

🧠 Technical Insight

• M/L/L Triple Leather Lip Design
• Genuine Leather Sealing Elements
• Reinforced Steel Case
• Self-Lubricating Leather Technology
• Excellent Shaft Conformability
• Suitable for Oil & Grease Lubrication
• Heavy Industrial Service
• Traditional Heavy-Duty Sealing Solution

✅ Key Features

• SCHNIEDER Industrial Quality
• M/L/L Triple Leather Profile
• Genuine Leather Sealing Lips
• Reinforced Steel Case
• Excellent Wear Resistance
• Heavy Duty Construction
• OEM Replacement Ready
• Long Service Life

📊 Specifications

Brand: SCHNIEDER

Model: M/L/L

Size: 3.375 × 4.380 × 0.625 inch

Type: Triple Leather Rotary Shaft Oil Seal

Material: Genuine Leather

Case Material: Steel

Profile: M/L/L

Construction: Metal Case + Triple Leather Lip

Shaft Diameter (ID): 3.375 inch

Housing Diameter (OD): 4.380 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
• REPCO Leather Oil Seal
• TROSTEL Leather Seal
• Garlock Leather Seal
• Federal-Mogul Leather Oil Seal
• DICHTOMATIK Leather Oil Seal
• OEM Triple Leather 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, pump repair, mining equipment service, machinery restoration, 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