The REPCO Oil Seal 3.750x5.004x0.688 M/L/F Leather is designed for industrial rotating equipment requiring dependable lubricant retention, durable construction, and reliable operation in dusty, abrasive, or demanding environments.

The manufacturer-specific M/L/F Profile indicates a composite industrial sealing arrangement associated with metal support, a leather sealing element, and fabric-reinforced components. The metal structure helps maintain dimensional stability and secure installation within the housing, while the leather lip creates controlled sealing contact around the rotating shaft.

Fabric reinforcement may provide additional structural support and resistance to deformation under vibration, mechanical loading, and contaminated operating conditions. However, because profile designations vary between manufacturers, the exact sequence and arrangement of the metal, leather, and fabric components must be confirmed from the original seal or technical drawing.

Genuine leather can absorb a small amount of lubricating oil and maintain a thin lubricating film at the shaft-contact area. This characteristic helps reduce dry friction and supports smoother operation under compatible operating conditions.

Leather sealing elements also conform naturally to minor shaft wear and moderate surface irregularities. This makes the seal particularly suitable for older machinery, rebuilt equipment, and restoration applications where preserving the original sealing configuration is important.

This seal is generally suitable for compatible applications involving:

• Mineral oils
• Gear oils
• Bearing grease
• Industrial lubricating oils
• Petroleum-based lubricants
• Compatible grease-lubricated systems

Leather and fabric performance depends on lubricant type, shaft speed, operating temperature, moisture exposure, shaft condition, fabric treatment, and environmental factors. These operating conditions should be verified before installation.

The inch dimensions correspond approximately to:

Shaft diameter: 3.750 inches or 95.25 mm

Housing diameter: 5.004 inches or 127.10 mm

Seal width: 0.688 inch or 17.48 mm

The relatively wide axial section and specific outside diameter indicate that this seal may be intended for a dedicated bearing housing, gearbox, transmission, axle assembly, or OEM industrial machine. Accurate dimensional measurement and full M/L/F profile verification are essential before replacement.

⚙️ Applications

• Industrial gearboxes
• Bearing housings
• Mechanical transmissions
• Agricultural machinery
• Construction equipment
• Mining and quarry machinery
• Conveyor drive assemblies
• Power transmission systems
• Legacy industrial machinery
• OEM rotating equipment

🎯 Benefits

✔ Genuine leather sealing element

✔ Fabric-supported heavy-duty construction

✔ Reliable oil and grease retention

✔ Conforms to slightly worn shaft surfaces

✔ Metal reinforcement supports dimensional stability

✔ Suitable for dusty and abrasive environments

✔ Good resistance to wear under compatible conditions

✔ Ideal for maintenance, overhaul, and restoration work

✔ OEM replacement ready when dimensions and profile match

🧠 Technical Insight

• REPCO M/L/F Seal Reference
• Metal + Leather + Fabric Construction
• Genuine Leather Sealing Element
• Fabric-Reinforced Structural Support
• Industrial Rotary Shaft-Sealing Function
• Suitable for Compatible Oil and Grease
• 95.25 mm Shaft Diameter
• Full M/L/F Cross-Section Verification Required

✅ Key Features

• REPCO Industrial Quality
• M/L/F Composite Profile
• Genuine Leather Sealing Lip
• Fabric-Supported Construction
• Metal Structural Reinforcement
• Heavy-Duty Inch-Size Design
• Industrial Replacement Seal
• OEM Cross-Reference Ready

📊 Specifications

Brand: REPCO

Model: M/L/F

Size: 3.750 × 5.004 × 0.688 inch

Metric Equivalent: Approximately 95.25 × 127.10 × 17.48 mm

Type: Fabric-Reinforced Leather Rotary Shaft Oil Seal

Sealing Material: Genuine Industrial Leather

Reinforcement Material: Metal and Fabric Components

Profile: M/L/F

Construction: Manufacturer-Specific Metal + Leather + Fabric Seal Construction

Lip Design: Genuine leather sealing element; verify against the original profile

Dust Lip: Verify from the actual M/L/F cross-section

Spring Type: None unless otherwise shown in the original construction

Shaft Diameter (ID): 3.750 inches / 95.25 mm

Housing Diameter (OD): 5.004 inches / approximately 127.10 mm

Width: 0.688 inch / approximately 17.48 mm

Pressure Capability: Low-pressure lubricant-retention service unless otherwise specified

Lubrication: Mineral oil, gear oil, and compatible grease

Temperature Range: Depends on the leather grade, fabric treatment, lubricant, shaft speed, and operating conditions

Application Class: Heavy-Duty Industrial and Legacy Equipment

Standard: Inch-Size Industrial Seal

🔁 Equivalent

Suitable replacement for compatible:

• REPCO M/L/F Leather Rotary Shaft Seal
• 3.750x5.004x0.688 Leather Oil Seal
• 95.25x127.10x17.48 Rotary Seal
• Fabric-Reinforced Leather Oil Seal
• Industrial Bearing Housing Leather Seal
• Industrial Gearbox Leather Seal
• Heavy-Duty Composite Shaft Seal
• Legacy Equipment Leather Seal
• OEM M/L/F Shaft Seal
• Industrial Leather Rotary Shaft Oil Seal

The same dimensions alone do not guarantee interchangeability. The replacement must match the original M/L/F cross-section, metal-support configuration, leather-lip geometry, fabric reinforcement, installation direction, and lubricant compatibility.

(Always verify dimensions, M/L/F profile geometry, leather grade, fabric construction, lip direction, shaft and housing condition, lubricant compatibility, rotational speed, temperature, and operating conditions before ordering.)

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for gearbox overhaul, bearing-housing maintenance, transmission servicing, agricultural and construction machinery repair, mining equipment maintenance, legacy machinery restoration, and compatible 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