The TROSTEL Oil Seal 3.938x5.375x0.938 M/L LEATHER is specifically engineered for demanding industrial applications requiring maximum durability, contamination protection, and reliable lubricant retention.

Unlike conventional NBR oil seals, the genuine leather sealing lip naturally absorbs lubricating oil and continuously forms a thin lubrication film between the shaft and sealing surface. This unique self-lubricating characteristic reduces friction, minimizes shaft wear, and improves sealing efficiency under severe operating conditions.

The M/L (Metal Case / Leather Lip) construction combines a heavy-duty steel outer case with a premium leather sealing element. This design provides outstanding structural rigidity and excellent resistance against dust, dirt, sand, mud, and abrasive particles commonly found in mining, construction, agricultural, and industrial processing environments.

Leather oil seals remain widely used in legacy machinery and imported industrial equipment because the flexible leather lip can accommodate minor shaft imperfections while maintaining effective sealing performance.

With dimensions of 3.938 x 5.375 x 0.938 inch, this seal is commonly installed in industrial gearboxes, crushers, conveyors, pumps, mining equipment, agricultural machinery, and heavy rotating equipment operating under severe service conditions.

⚙️ Applications

• Industrial gearbox
• Mining equipment
• Crushers
• Conveyor systems
• Heavy-duty pumps
• Agricultural machinery
• Construction equipment
• Material handling systems
• Imported inch-size machinery
• Heavy rotating equipment

🎯 Benefits

✔ Excellent oil retention

✔ Superior dust exclusion

✔ Natural self-lubricating properties

✔ Extend shaft and bearing life

✔ Reduce shaft wear

✔ Lower maintenance costs

✔ Ideal for severe industrial environments

🧠 Technical Insight

• Genuine leather absorbs lubricant naturally
• Creates a continuous lubrication film
• Excellent performance in dusty environments
• Steel outer case improves structural rigidity
• Suitable for oil and grease lubrication
• Ideal for heavy-duty and legacy machinery
• Proven sealing technology for industrial equipment

✅ Key Features

• Genuine Leather Sealing Lip
• Heavy-Duty M/L Construction
• Superior Contamination Protection
• Natural Lubrication Properties
• Industrial Grade Performance
• OEM Replacement Ready

📊 Specifications

Brand: TROSTEL

Model: M/L

Size: 3.938 x 5.375 x 0.938 inch

Type: Leather Rotary Shaft Oil Seal

Material: Genuine Leather

Outer Case: Steel

Construction: Metal Case + Leather Lip

Shaft Diameter (ID): 3.938 inch

Housing Diameter (OD): 5.375 inch

Width: 0.938 inch

Application Class: Heavy-Duty Industrial Service

🔁 Equivalent

Suitable replacement for:

SKF Leather Seal

CR Leather Seal

National Leather Seal

Garlock Leather Seal

Chicago Rawhide Leather Seal

REPCO Leather Seal

Industrial Leather Oil Seal

(Always verify dimensions and seal profile before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

📦 MOQ: 1 Piece

📲 Contact via LINE ID: dusitrea

🏭 Suitable for industrial maintenance and OEM replacement