The AEROQUIP Oil Seal 6.500x8.006x0.750 M/L Leather is designed for large rotating equipment requiring durable sealing performance, robust structural support, and dependable lubricant retention around a 6.500-inch shaft.

The M/L Profile generally refers to a manufacturer-specific metal-supported leather rotary shaft-seal arrangement. The metal structure helps preserve the seal’s shape, supports the leather element, and provides a stable fit within the housing. The leather sealing element maintains controlled contact with the rotating shaft to help reduce leakage of oil or compatible grease.

Industrial leather can retain a small amount of lubricant around the shaft-contact area. Under suitable operating conditions, this helps maintain a lubricating film, reduce dry friction, and support consistent sealing performance.

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

The 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-seal performance depends on the leather grade, lubricant type, shaft speed, temperature, moisture exposure, shaft finish, installation condition, and operating environment. These factors should be reviewed before installation.

The inch dimensions correspond approximately to:

Shaft diameter: 6.500 inches or 165.10 mm

Housing diameter: 8.006 inches or 203.35 mm

Seal width: 0.750 inch or 19.05 mm

The large shaft diameter, substantial outside diameter, and 0.750-inch axial width indicate that this seal is suitable for large bearing housings, heavy gearboxes, process machinery, transmission systems, pumps, and other substantial industrial assemblies. Accurate dimensional measurement and verification of the original M/L cross-section are essential before replacement.

⚙️ Applications

• Heavy industrial gearboxes
• Large bearing housings
• Industrial pumps
• Mechanical transmissions
• Process machinery
• Agricultural machinery
• Construction equipment
• Conveyor drive assemblies
• Legacy industrial machinery
• OEM rotating equipment

🎯 Benefits

✔ Genuine industrial leather sealing element

✔ Helps retain oil and compatible grease

✔ Can conform to minor shaft-surface wear

✔ Metal-supported construction

✔ Suitable for large 6.500-inch shaft assemblies

✔ Suitable for maintenance and overhaul work

✔ Useful for legacy-equipment restoration

✔ Supports bearing and component protection

✔ OEM replacement ready when dimensions and profile match

🧠 Technical Insight

• AEROQUIP M/L Seal Reference
• Metal-Supported Leather Construction
• Genuine Oil-Treated Leather Sealing Element
• Normally Springless Shaft-Seal Arrangement
• Low-Pressure Lubricant Retention
• Heavy-Duty Large-Diameter Construction
• 165.10 mm Shaft Diameter
• M/L Cross-Section Verification Required

✅ Key Features

• AEROQUIP Industrial Quality
• M/L Leather Profile
• Genuine Industrial Leather Material
• Metal-Supported Construction
• Inch-Size 6.500x8.006x0.750 Dimensions
• Suitable for Compatible Oil and Grease
• Heavy-Duty Industrial Replacement Seal
• OEM Cross-Reference Ready

📊 Specifications

Brand: AEROQUIP

Model: M/L

Size: 6.500 × 8.006 × 0.750 inch

Metric Equivalent: Approximately 165.10 × 203.35 × 19.05 mm

Type: Leather Rotary Shaft Oil Seal

Material: Genuine Oil-Treated Industrial Leather

Case Material: Metal

Profile: M/L

Construction: Manufacturer-Specific Metal-Supported Leather Shaft-Seal Arrangement

Lip Design: Leather sealing element; verify the exact M/L geometry against the original seal

Dust Lip: None unless shown in the original cross-section

Spring Type: Normally none; verify the actual seal construction

Shaft Diameter (ID): 6.500 inches / 165.10 mm

Housing Diameter (OD): 8.006 inches / approximately 203.35 mm

Width: 0.750 inch / 19.05 mm

Pressure Capability: Low-pressure lubricant-retention service

Lubrication: Mineral oil, gear oil, and compatible grease

Temperature Range: Depends on the leather grade, lubricant, shaft speed, moisture exposure, and operating conditions

Application Class: Heavy-Duty Industrial and Legacy Rotating Equipment

Standard: Inch-Size Industrial Seal

🔁 Equivalent

Suitable replacement for compatible:

• AEROQUIP M/L Leather Rotary Shaft Seal
• AEROQUIP 6.500x8.006x0.750 Leather Seal
• 165.10x203.35x19.05 Rotary Seal
• 6.500-Inch Shaft Leather Seal
• Large-Diameter Leather Oil Seal
• Heavy Bearing Housing Seal
• Industrial Gearbox Leather Seal
• Pump Shaft Leather Seal
• OEM M/L Leather Shaft Seal
• Industrial Leather Rotary Shaft Seal

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

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

📦 Availability

✅ In Stock

🚚 Fast Delivery Available

🌎 Worldwide Shipping Available

📦 MOQ: 1 Piece

🏭 Suitable for heavy gearbox overhaul, large bearing-housing maintenance, pump repair, transmission servicing, process-equipment maintenance, agricultural machinery repair, construction-equipment repair, 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