The TROSTEL 3.313x5.004x0.469 M/L Leather Oil Seal is engineered for industrial rotating equipment requiring durable sealing performance and traditional leather sealing technology. This seal is particularly suitable for heavy-duty machinery operating under harsh conditions where reliability, contamination resistance, and long service life are essential.

The M/L Profile combines a reinforced steel outer case with a genuine leather sealing lip. This traditional sealing configuration has been widely used in industrial machinery, mining equipment, agricultural systems, pumps, compressors, and heavy-duty rotating equipment for decades due to its exceptional durability and ability to adapt naturally to shaft surfaces.

Unlike modern synthetic elastomer seals, genuine leather possesses unique oil absorption characteristics. During operation, the leather lip absorbs lubricating oil and develops a microscopic lubrication film between the sealing surface and shaft. This natural self-lubricating effect helps reduce friction, minimize heat generation, decrease shaft wear, and maintain sealing performance throughout extended service periods.

Leather oil seals are especially valuable for older machinery originally designed with leather sealing technology. They are also highly effective in dusty and abrasive environments where contamination control is critical. The flexible leather lip can adapt to minor shaft imperfections and wear patterns, making it a preferred choice for restoration projects and equipment maintenance programs where preserving original equipment specifications is important.

The reinforced steel case provides excellent dimensional stability and secure housing retention, while the genuine leather sealing element ensures effective lubricant retention and protection against external contaminants. This combination provides reliable sealing performance under demanding industrial operating conditions.

With dimensions of 3.313 x 5.004 x 0.469 inch, this oil seal is commonly used in industrial gearboxes, pumps, compressors, mining equipment, conveyor systems, agricultural machinery, power transmission systems, and OEM equipment utilizing inch-size shaft systems.

⚙️ Applications

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

🎯 Benefits

✔ Genuine leather sealing technology

✔ Excellent lubricant retention

✔ Outstanding wear resistance

✔ Suitable for worn shaft surfaces

✔ Performs well 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 Harsh Industrial Environments
• Traditional Heavy-Duty Sealing Solution

✅ Key Features

• TROSTEL Industrial Quality
• M/L Leather Seal Design
• 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: 3.313 x 5.004 x 0.469 inch

Type: Leather Rotary Shaft Oil Seal

Material: Genuine Leather

Case Material: Carbon Steel

Profile: M/L

Construction: Metal Case + Leather Lip

Shaft Diameter (ID): 3.313 inch

Housing Diameter (OD): 5.004 inch

Width: 0.469 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 Seal
• SCHNEIDER Leather Seal
• REPCO Leather Seal
• Garlock Leather Seal
• Federal-Mogul Leather Seal
• Dichtomatik Leather Seal
• OEM 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, machinery restoration, gearbox repair, pump overhaul, mining equipment service, 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